08/19/2026
It’s Wildlife Wednesday! We hope that our Wildlife Wednesday posts have introduced you to some critters that you never even knew were your neighbors here in the Sacramento region. This week’s critter might fall into that category. It’s actually a fairly common resident in our area, although it’s rarely seen. So, go to your closet, put on your favorite mink coat, and let’s celebrate this adorable little killing machine!
The American mink, Neovison vison, is a semi-aquatic member of the weasel family, known as the Mustelidae family. Its wild North American mustelid cousins include weasels, otters, badgers, martens, fishers, and wolverines. This is important information to share with your friends named Ed. You “must tell Ed!” (I know, that was really stretching it for that pun but there’s no way I can weasel my way out of it now. I could badger you with weasel puns all day, but you’d get otterly disgusted with that!)
The American mink is native to North America and is found across the continent, except in the extreme desert southwest. They prefer riparian habitat near the brushy or rocky edges of lakes, ponds, rivers, and streams. The males are slightly larger than the females, with an average male mink measuring about 2 feet long, from the tip of its cute little nose to the tip of its tail. A male mink might only weigh 2 pounds! Their toes on all four feet are partially webbed, reflecting the mink's semi-aquatic nature.
Their wonderfully soft fur is usually dark brown, sometimes with white patches on the chin, throat, or chest. The fur is dense, with oily guard hairs that waterproof the animal's coat. Grooming is an essential daily activity for the mink to maintain its lush fur coat in optimal condition. I guess you could say that the mink is a little furrier!
American mink pelts have long been considered one of the most luxurious furs on the market, used in coats, capes, stoles, or fur trim for luxury items. Originally, all the fur came from natural mink populations, which caused severe declines for the species. Increased demand in the mid-1800s led to the start of commercial mink farming, which reached its peak in the U.S. in the mid-1960s, with 7,200 mink ranches across the country! In 2013, there were only 275 mink farms in the U.S., but they produced 3 million pelts, with a value of more than $300,000,000!
In the 1920s, American mink were introduced to northern Europe and raised on mink farms for their valuable fur. Unfortunately, animals escaped or were released into the wild and established feral populations. Now, the American mink is widely distributed across much of the European continent and is considered an invasive species, responsible for the near extinction of the critically endangered European mink, Mustela lutreola, and other native species as well. The same scenario has played out in parts of Asia and South America. It’s never a good idea to introduce species into areas where they are not native, as there are usually severe, unintended, ecological consequences of doing so.
Mink are highly carnivorous and predatory, with their diet consisting of fish, frogs, snakes, crayfish, birds, shrews, rabbits, mice, and muskrats. A few years ago, while hiking around a gorgeous lake in Maine, my wife and I stopped at the water’s edge to admire the beautiful scene. We were very still and quiet and a little mink dashed within inches of our feet, slid into the water, came out with a small fish in its mouth, and dashed back into the bushes. It all happened within 15 seconds! Such an amazing sight to see!
The American mink is an excellent swimmer and is extremely maneuverable underwater. It can dive as deep as 16 feet and swim underwater up to 35 yards. When swimming and diving, the mink slows its heartrate down considerably to conserve oxygen, although its dives rarely exceed 60 seconds in duration. They use their webbed feet and an undulating motion with their body to propel themselves through the water so quickly that they can chase down most fish in only a few seconds!
Mink stink! Being members of the Mustelidae family of mammals, the American mink has scent glands near its rear end that it uses to mark its territory and communicate with other mink in the area. When disturbed, it can expel the contents of those scent glands, like a skunk’s spray! Although the mink can’t spray as far as a skunk can, the smell is apparently much worse!
Clinton Hart Merriam (1855-1942) was an American zoologist, mammalogist, ornithologist, entomologist, ecologist, ethnographer, geographer, naturalist, physician, and serious overachiever! He is regarded as the 'father of mammalogy,’ the study of mammals. Merriam described the odor produced by the American mink’s scent glands as being, “more unbearable than that produced by skunks.” He so eloquently added that it was, "one of the few substances, of animal, vegetable, or mineral origin, that has, on land or sea, rendered me aware of the existence of the abominable sensation called nausea."
Many thanks to my good friend Truman Holtzclaw, amazing photographer/naturalist, who has agreed to share his remarkable photos of American mink that he’s photographed near his home in Lincoln, CA! Thanks Truman!
