Mink

The furtive mink is rarely seen on wooded trails away from water. (photo by Dmitri Tundra)

Common Name: Mink – Northern European origin, possibly from Swedish menk, which meant “stinking animal from Finland.“ It became mynk in Middle English and linguistically crossed the Atlantic to become mink in American English.

Scientific Name: Neogale vison – The genus is a recently introduced taxonomy that distinguishes  American mink from European mink. The Greek word for weasel is galē so the new genus is essentially “New World weasel.” Vison, sometimes vison weasel, is another name for American mink, though rarely used. Weasel is derived  from wisula,  Old High German  for weasel, translating to vison in French. In older texts, Mustela vison is used, the genus a derivative of Mustelidae. Musēla is Latin for weasel.

Potpourri:  The furtive mink is rarely seen on wooded trails away from water as they are predominantly aquatic predators. The photo above was taken at Lilypons, a nursery near Frederick, Maryland specializing in water lilies and other aquatic plants that closed in 2025 after a hundred years of operation. The many ponds there offered an ideal and protected habitat with ample food that apparently led to a degree of familiarity due to the frequency of human encounters. Like its cousin the otter, minks are protected against the penetrating cold water by a dense, layered coat of fur. The soft and dense undercoat fur is called ground hair and the longer protective covering is called guard hair. [1] Because of this superior natural insulation, similar to that of the beaver, it has been subject to human predation for centuries. Because it is killed for its luxurious pelt and not eaten as meat, it is the iconic symbol of animal rights activists just as much as the polar bear is to those concerned about global warming.

Minks evolved to take advantage of the opportunity afforded by riparian habitats with superior swimming abilities, including partially webbed feet,  and a waterproof pelt. Primarily carnivorous minks subsist on other animals that congregate in and around water. While its preferred prey is muskrat, minks also consume fish, amphibians, snakes, and marsh-dwelling birds as alternatives.  Absent the availability of animals for meat, berries, eggs, and even carrion may be consumed, testimony to the survival skills afforded by adaptability. Water also provides an escape route from mink predators such as lynx, fox, and coyotes, which are not as adept in water.  Minks can hold their breath, remaining submerged for over a minute, and dive as deep as sixteen feet while moving rapidly away under water. Beaver followed a similar evolutionary path along and in streams as swimming and lodging herbivore rodents. [2]

Like most mammals, the life cycle of the mink is concentrated on successful procreation. Roving males establish territories that extend over larger streams that normally encompass several female territories in smaller, tributary streams. Both males and females  establish and maintain territorial boundaries with malodorous discharges for anal glands that are similar but not as penetrating as those of closely related skunks. Called sexual habitat segregation, it is an evolved behavioral pattern that limits intersexual competition. [3]  Males copulate with several females within their boundaries in winter and eventually cohabit with one. Egg uterine implantation is delayed by females for up to six weeks depending on the temperature to ensure birth of 3 to 7 young called kits born blind and naked in early spring. Males play no role in parenting, consistent with typical mammal behavior. Dens serve as a palladium from the elements for both male and female minks. While repurposed muskrat burrows or beaver dens suffice, new dens may be dug out near a stream bank if necessary.

Minks are members of the Family Mustelidae, the largest group in the Order Carnivora, with  about 85 extant species in 33 genera worldwide that evolved from about 400 extinct species. Carnivores are either dog-like, including bears, raccoons and the pinniped seals and walruses in addition to mustelids or cat-like, which includes mongooses and hyenas. Mustelids provide an exceptional example of adaptive radiation, the evolution of traits and appearance that are necessary and sufficient to survive in different habitats as individuals relocate to new areas. The ancestral mustelid first appeared in Eurasia in the Oligocene Epoch about 30 million years ago and dispersed globally. Body length became the most notable morphological discriminant. [4] The modern mink first appears in the Pleistocene, about 3 million years ago, evolving separately in both North America (E. vison) and in Eurasia (Mustela lutreola, lutra is Latin for otter). In the modern era, American minks have been introduced to Europe where they outcompete the local minks due to better adaptability to new habitats. [5]

Where minks are furtive and few, weasels, the namesake of the Mustelidae, are the most common carnivore in the Western Hemisphere. Weasels employ the characteristic mustelid scent for territory markings and breeding behaviors are almost identical to those of the mink. One major difference between weasels and minks is habitat and prey. Where minks are aquatic and prey on animals in or near water, weasels are terrestrial, preying mostly on rodents like voles and chipmunks. The challenge of chasing rodents gave rise to the weasel’s sinuous, bounding attack. They are noted for killing spree assaults on hen houses. The weasel’s reputation for stealth and deception are captured in the dictionary definition as “a sly, cunning, or sneaky person.” Weasel words connote lack of commitment. Weasel fur, while protective, is not as dense and protective as that of the mink. In winter, the dearth of terrestrial prey and limited heat insulation takes its toll.

A long-tailed weasel succumbed to winter’s wrath.

Food, clothing, and shelter are the three fundamental physiological needs on which Maslow’s hierarchy rests. Animals provide two of them. When the first hominids ventured out into Africa’s savannahs, they left behind the food of fruited forests and became naked apes. As Homo sapiens evolved and migrated north into Eurasia, animals as a source of warm clothing became just as important as food. Bone tools were found at an archeological dig in Morocco several years ago that are thought to have been used for sewing animal skins together about 100,000 years ago. [6] This was coincidentally the beginning of the last Ice Age.  While the domestication and slaughter of animals for food has been grudgingly accepted today as normative, notwithstanding vegan preferences and greenhouse gas issues, the killing of animals for clothing faces widespread disapprobation. Mink is at the epicenter of this cultural controversy.

The animals as food debate has been integral to the development of Western Civilization ever since it entered the modern age in the 16th century (Gutenberg’s printing press first appeared in the mid-15th century giving rise to the spread of books like the Bible). The Catholic Middle Ages relied on the Bible as divine and irrefutable law. In Genesis, man is instructed to “be fruitful and multiply” and “have dominion … over every living thing that moveth upon the earth.” This was nothing new, as even Aristotle, the fount of Greco-Roman culture offered that “plants are created for the sake of animals, and animals for the sake of men.” While there are good philosophical arguments about not eating animals, there are none that stand up to the practical reality of survival in a world of scarcity. As Thomas Huxley, widely known as Darwin’s bulldog (in championing the theory of evolution), observed, civilization is a conspiracy against nature. [7]

There is a somewhat more nuanced argument about skinning animals and not eating them. Cow skin is collected as a byproduct of the abattoir and tanned into leather for everything from shoes to saddles with little objection.  Animal fur has been used for clothing in the northern reaches of Eurasia for millennia. Survival in the frigid expanse of the boreal forest and open tundra required ingenuity in the use of fire, skill in hunting animals for food, and staying warm enough to procreate in caves and chase after prey, especially in winter. The choice of clothing mattered and warmer furs were more protective. Evolution to the environment is the driving force of survival of the fittest. Animals like minks that established niche habitats of frigid waters can only have done so with random mutations that perfected the fur coat. Humans merely repurposed them. Presumably, a better “suited” hominid could have evolved so as to retain and improve on body hair for warmth and endurance. However, evolution has only a historical past but has no plan for the  future and hunting with animal skin clothing was more successful than being hairy for evolutionary survival.  

Fur trapping and trading was integral to the colonization of North America. New France was reliant on the fur trade established by royal decree. The Hurons of the Great Lakes region supplied the pelts of mostly beaver and otter from the interior first to French entrepôts first at Quebec City and later at Montreal for export back to Europe. Later, coureurs du bois (French for wood runners) penetrated ever westward in their efforts to trap fur-bearing animals for skins to fill the insatiable demand of Europeans, who had depleted their native wildlife populations over centuries of exploitation. John Jacob Astor created the first American trust with the American Fur Company in the early 19th century, extending it westward as the Pacific Fur Company with an outpost on the Columbia River named Astoria in 1805. Top hats made from beaver skins became the symbol of the Victorian Era. [8] It could be convincingly argued that fur trapping and trading was foundational to the establishment of the United States as a leading world economic power.

That was then. The world has since become overrun by habitats for humanity at the expense of habitats for animals. The plight of the mink has been particularly harsh, as its fur is the most popular in the world, with about 80 percent coming from mink farms and 20 percent from trapping animals in the wild. Fur has been popular in fashion since the 10th century. Even the Vikings considered American beaver pelts as exotic. High demand followed population and prosperity through the post World War II consumer era to peak in the 1980’s with a global trade value of almost two billion dollars. The mink stole was the height of fashion. As the environmental movement arose to address polluted air, spoiled water, and plunging wild animal populations, the fur industry became an inevitable target. From a peak of almost 4,000 mink farms in the United States in the 1940’s, the number has plunged to about 100 in 2021. [9]

Faux fur was introduced in the early 20th century using looped yarn, a process pioneered for making velvet and corduroy. Technology advances led to the use of silk and then polymers like Orlon replicating the appearance, but not the feel, of real mink in the 1950’s. The textile industry began supporting anti-fur ads in the 1970’s with celebrities such as Doris Day pronouncing, “killing an animal to make a coat is a sin.” [10] As fashion follows a sinusoidal trajectory according to capricious human nature, real fur is in the midst of a renaissance. The increase in the super rich population seeking to distinguish their relative prosperity drives the popularity of things like Maserati Automobiles and Patek Philippe watches―and real mink fur coats. As expense is all that matters, the preference is for wild mink fur as opposed to minks raised on farms since it is more natural, but mostly because they are more expensive.  There is also a practical side for real fur as an article of clothing for protection against the cold. The polar weather that periodically moves south makes it abundantly clear that nature’s insulation is worth another look. There will continue to be a demand for mink fur among certain demographic groups in spite of widespread opprobrium.

Trapping wild animals is a practice that should be discouraged.  Even though regulations for trapping are intended to be safe and effective, including the requirement that each trap is to be inspected daily, it is almost impossible to enforce them without an army of government agents. An animal with one leg painfully clamped in a metal trap for days is one of the realities of trapping that should evoke the need for change. [11]

A mink coat (with fox fur hat) protects against polar vortices and bomb cyclones.

Mink farming offers a middle ground. Mink farmers do not profit by harming their livestock, which are domesticated animals like cows and pigs. All are eventually killed, skinned, and exploited. While mink meat is rarely eaten by humans, it is rendered into a variety of products from pet food to organic fertilizer. Mink oil is valued as a source of hypoallergenic cosmetic products. [12] Protection of the environment and its animal denizens must involve some compromise to ever succeed in a burgeoning human population. Wild minks will proliferate, controlling muskrat populations, and maintaining the ecological balance of their habitats in spite of humans if mink farms provide an acceptable alternative.

References:

1. Gintel, O. “Furs” Encyclopedia Brittanica Macropedia Volume 7 pp 811-817, William Benton Publisher, University of Chicago 1972.

2. Whitaker, J. National Audubon Field Guide to North American Mammals, Alfred A. Knopf, New York, 1996. pp 754-787.

3. Zabala, J. et al (2007). “Spacing pattern, intersexual competition and niche segregation in American mink”. Annales Zoologici Fennici. Volume 44 Number 4 11 January 2007.

4. Law, C. et al. “Lineage Diversity and Size Disparity in Musteloidea: Testing Patterns of Adaptive Radiation Using Molecular and Fossil-Based Methods”. Systematic Biology. 1 January 2018Volume 67 Number 1  pp 127–144

5. https://animals.net/mink/ 

6. Hallett, E. et al “A worked bone assemblage from 120,000–90,000 year old deposits at Contrebandiers Cave, Atlantic Coast, Morocco” iScience, Volume 24, Issue 9, 24 September 2021. https://www.sciencedirect.com/science/article/pii/S2589004221009561  

7. Stuart, T. The Bloodless Revolution, W, W, Norton, New York, 2006, a detailed account about the history of vegetarianism from 1600 to today.

8. DeVoto, B. The Course of Empire, Easton Press, Norwalk Connecticut, 1952, pp 97,140, 539.

9. https://www.britannica.com/procon/fur-clothing-bans-debate 

10. Hines, A. “The History of Faux Fur” Smithsonian Magazine, 22 January 2015. https://www.smithsonianmag.com/history/history-faux-fur-180953984/ 

11. US Fish and Wildlife Service https://www.fws.gov/story/trapping   

12. Fur Commission “Mink Farming in the United States” November 2002 http://www.furcommission.com/resource/Resources/MFIUS.pdf

Cougar

A cougar searches for guanacos, wild llamas indigenous to the grasslands of Patagonia, their primary prey

Common Name: Cougar, mountain lion, puma, catamount (cat of the mountain), panther, American lion, and many others – Cougar is derived from the language of the Tupi people, an indigenous group from central Brazil. The original name cuguacuarana was a modification of suasuarana, which literally meant false (rana) deer (suasu). This was presumably to distinguish the large cat with fur that was similar in color to deer from the jaguar, another large cat with spots which is also indigenous to South and Central America.

Scientific Name: Puma concolor – The generic name Puma is taken directly from the Quechua language of the natives of southern Peru in the Andes Mountains. Concolor means to have one, consistent color, noting the same attribute as the similarly colored deer – cougar etymology. Also listed on occasion as Felis concolor. Felis is the Latin word for cat. [1]

Potpourri:   The cougar has the largest geographic range of any terrestrial mammal in the Western Hemisphere, extending from the boreal forests of northern Canada and Alaska to the open grasslands of Patagonia at the southern tip of South America. As a solitary apex predator, it is without equal, adapting to extremes of climate and variety of prey from snowy tundra in the north across the desert Southwest into the rainforests of Brazil to elevations of over 15,000 feet in the Andes and back to sea level in southern Chile and Argentina. [2] Recognized and feared by many populations of people along the way, the cougar has accumulated a long list of common names … over forty applied according to the local languages of diverse tribal populations. The cougar/puma/mountain lion/et cetera holds the record for the most names of any mammal species [3] As a result, cougars convey a sense of mystery and intrigue in being somehow different animals even though they are the same.

Unlike most of the other large cats, cougars hunt day and night, favoring daylight in wilderness areas and night when near populated regions. Sightings by humans are almost universally fleeting resulting in frequent mistaken identities. The similarly colored bobcat (Lynx rufus) can easily look like a mountain lion based on a coup d’oeil of a darting large, brownish, furry animal. However, like the alleged encounters with yeti in the Himalayas and sasquatch in the Pacific Northwest, there have been no confirmed sightings of cougars in the Eastern United States for decades. This was the result of expanding settlement over the last two centuries and the near extirpation of the white-tailed deer, its primary food source. The last documented and validated records for cougar sightings were 1871 in Pennsylvania and 1887 in West Virginia. Further west confirmed sightings have been more recent; 1956 in Alabama and 1971 in Louisiana and Tennessee. [4] In 2008, the Smithsonian Conservation Biology Institute sponsored a six-month long program to assess the mammal populations along the Appalachian Trail corridor in Northern Virginia and Maryland using scented bait and a motion sensitive camera. With over 4,000 sightings including multiple bobcats, bears, and coyotes, among many others, there were no cougars.  While absence of evidence is not evidence of absence, it is indicative of rarity at the very least. That is not to say that cougars won’t be back, as the surge in white-tailed deer will likely draw the adventuresome seeking a reliable source of food at some point.

The near pole to pole range of the cougar is testimony to the geographic adaptability of the Felidae or cat family as a whole, which originated in Asia in the Oligocene Epoch 35 million years ago. The “intelligent” evolutionary design of the basic felid has stood the test of time as the 8 genera and 37 living species migrated globally. Almost all cats are solitary (only lions having pride in association) and share the characteristics of consummate predators―lithe, muscular bodies, tearing teeth and claws, keen senses, and camouflaged fur coats. This suite of attributes has changed little over the diaspora, testimony to the versatile success of cats. Based on DNA analysis of living cat species, the big cats of the genus Panthera, consisting of lions, tigers, leopards (including snow and clouded), and jaguars were first to become differentiated from ancestral species 10.8 million years ago in the Miocene Epoch, the age of mammals. Note that all the “big cats” could also be called panthers, and, for those with fur darkened by melanin for nocturnal hunting stealthiness like leopards and jaguars, the term black panther is widely used. It is hypothesized that an ancestral cat species migrated across the Beringian land bridge connecting Asia to Alaska 8 million years ago to give rise to the New World cats. The subsequent movement of cats through the Americas gave rise to cougars, lynxes, ocelots, and, ultimately, domestic cats. The closest DNA relative of the cougar is the cheetah, which evolved in North America and crossed back through Asia and into Africa about one million years ago to become the world’s fastest terrestrial animal. [5]

The cougar is not a “big cat” of the Panthera genus, a fact borne out by the observation that cougars don’t roar, a trait of note due in no small part to the MGM movie studio’s leonine opening sequence. The cougar might be thought of as the largest version of the domestic cat; both having diverse geographic and habitat adaptability suggests genetic similarity. The origins of cats as human companions has long stymied biologists since they don’t fit the pattern of domestication, lacking social group organization in which there is some sort of leadership hierarchy wherein the humans can become surrogate herd leaders. Herding cats is one of the maxims used to characterize missions impossible. The aloofness of cats is a matter of literary record; they are the “wildest of all wild animals” in Rudyard Kipling’s classic The Cat Who Walked by Himself. [6] Since the cat was proclaimed a sacred animal in the 5th dynasty of ancient Egypt about 4,000 years ago according to the hieroglyphic record, it was long thought that this led to domestication when cats proved their utility in ridding granaries of rodents. [7] However, recent archaeological and genetic research has revealed that domestication of cats began in Mesopotamia (Greek for mid river) between the Tigris and Euphrates over 10,000 years ago. DNA from 979 domestic and wild cats was analyzed to reveal that all cats evolved from Felis sylvestris lybica, the Middle East wild cat subspecies. In 2004, archaeologists digging on the island of Cyprus discovered a 9,500-year-old burial site containing a human and a cat, presumably imported as a pet from mainland Asia Minor (why else would they be buried together?). The current consensus is that domestic cats seeking rodent prey drawn by grain storage coevolved with humans in the Middle East as a matter of mutual benefit during the Neolithic (New Stone Age) Period. [8] Cougars that remained in the Americas sought larger prey and avoided human contact altorgether.

As an apex predator, cougars have a profound though largely unappreciated impact on ecosystems. Males occupy large, non-overlapping territories that range in size of over 500 square kilometers abutting several female territories that are about half that size. Other than biennial breeding during which they cohabitate for several weeks to propagate several cubs (not kittens), they live and hunt alone, which is the norm; 179 of 247 terrestrial carnivores are solitary. [9] A metanalysis of published research conducted several years ago revealed that puma-cougars preyed on 148 mammals, 36 birds, 14 reptiles and amphibians, and 5 fish. Of these, 40 species were found to avoid cougars due to fear effects, notably the cervids like deer of North America and camelids like the guanaco. the wild llamas of Patagonia. Predator avoidance results in reduced grazing, with evidence that 22 plant species benefited from the presence of cougars. Cougar deer kill has a more direct effect in removing on average one deer per week per cougar. The introduction of cougars to South Dakota is estimated to have saved over one million dollars due to a reduction in deer-vehicle collisions. [10] It is widely recognized that the burgeoning population of white-tailed deer in the Eastern United States is a matter of concern due to a combination of ecological damage in the consumption of seedling trees and the ever-present danger of running into one on the road. It is appropriate to at least entertain a change in public policy to promote the reintroduction of the mountain lion to the Appalachians.

There already is one population of cougars on the east coast in the state with the seventh highest population density. The Florida panther has struggled for survival against the onslaught of humanity for decades. Up until the beginning of the 20th century, the Puma concolor coryi, as the subspecies is designated taxonomically, ranged across the southeastern United States. Gradually, its preferred habitat of swampy forestland was cris-crossed by roads connecting population centers to the point that they retreated to southwestern Florida, where Big Cypress National Preserve and the adjacent Everglades National Park provide a survivable bastion. The population shrank to less than 50 animals and is now listed as threatened with projected extinction after 2050. [11] The problem is inbreeding, the bane of biology. Lack of mate variability promotes the advancement of harmful genetic traits, like low sperm count and heart murmurs in the case of the cougars. Over the last thirty years, efforts have been made to widen the gene pool. Eight Texas panthers were captured and released in south Florida in 1995. Thurty years later, sequencing of 29 genomes found “increased heterozygosity across the genome and reduced homozygous deleterious variants” which means increased diversity which promote survivability. [12] Florida panthers are so good at hunting white-tailed deer that there is some concern that deer hunting by humans needs to be curtailed as part of the statewide effort to save the panther, now that it is the official Florida state animal. [13] Having brought back bison, bears, eagles, condors, and wolves, it is high time for the renaissance of cougars.

References:

1. Webster’s Third New International Dictionary of the English Language, Unabridged, G. and C. Merriam Company, 1971.

2. The IUCN Red List of Threatened Species 2015: https://www.iucnredlist.org/species/18868/97216466      

3. Guiness Book of World Records –     https://www.guinnessworldrecords.com/search?term=cougar&page=1&type=all&max=20&partial=_Results&    

4. Whitaker, J. National Audubon Society Field Guide to North American Mammals, Alfred A. Knopf, New York, 1996. Pp 788-796.

5. Johnson, W. et al “The Late Miocene Radiation of Modern Felidae: A Genetic Assessment” Science, Volume 311 6 January 2006

6. Kipling, R. Just So Stories, The Odyssey Press, New York, 1902, pp 197-221.

7. “Cats” Encyclopedia Brittanica Macropedia, Willam and Helen Benton Publishers, Chicago, Illinois, 1972, pp 996-1000.

8. Driscoll, C. “The Taming of the Cat. Genetic and Archaeological findings hint that wildcats became housecats earlier- and in different place- than previously thought”. Scientific American. June 2009, Volume 300 Number 6 pp 68–75.https://pmc.ncbi.nlm.nih.gov/articles/PMC5790555/  

9. Elbroch, L. et al. “Adaptive social strategies in a solitary carnivore”. Science Advances. October 11, 2017, Volume3 Number 10.  

10. LaBarge, L. et al.  “Pumas Puma concolor as ecological brokers: a review of their biotic relationships”. Mammal Review. 18 January 2022, Volume 52, Number 3 pp 360–376. https://onlinelibrary.wiley.com/doi/10.1111/mam.12281  

11. Nowell, K. and Jackson, P.  “Wild Cats. Status Survey and Conservation Action Plan”. IUCN/SSC Cat Specialist Group. IUCN, Gland, Switzerland, 1996. p 131 http://carnivoractionplans1.free.fr/wildcats.pdf       

12. Simonti, C. “Saving the Florida Panther” Science 4 September 2025, Volume 389, Issue 6764.

13. Bled, F. et al “Balancing carnivore conservation and sustainable hunting of a key prey species: A case study on the Florida panther and white-tailed deer”Journal of Applied Ecology. 9 June 2022, Volume 59, Number 8 pp 2010–2022. https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2664.14201