Gray Wolf

Canis lupus

collared_gray_wolf_04-01-13.jpg

Collared, grayish-tan wolf in open field
The gray wolf is a federal Endangered Species in much of the US south of Interstate 80, including Missouri.
Regina Mossotti
Endangered
Species of Conservation Concern
Other Common Name
Timber Wolf
Family

Canidae (dogs) in the order Carnivora

Description

The gray wolf is similar to the coyote but is larger and more robust (coyotes seldom exceed 30 pounds in our state), with a broader nose pad, a larger heel pad on the front foot, somewhat coarser pelage (fur), longer and more slender legs, and larger ears in proportion to the head. The coloration varies.

This species is an occasional visitor to our state. Because of the great variety in the bodies of dogs, coyotes, and wolves, to ensure correct identification, seek expert advice. In the last decade or so, Missouri hunters have occasionally shot federally endangered wolves that have wandered here from other states, having mistaken them for enormous coyotes.

Similar species: In addition to the coyote and domestic dog, noted above, the gray wolf is also very similar to the red wolf (Canis rufus), one of the world’s most endangered canids, which once called southern and eastern Missouri home. It no longer occurs in our state; in 1950, a small female killed in Taney County became the last red wolf on record in Missouri. Globally, the red wolf was declared extinct in the wild in 1980, but a captive breeding program has resulted in this canid being successfully reintroduced into a small area in northeastern North Carolina.

Size

Total length: about 50–60 inches; tail length: about 13–16 inches; weight: 60–120 pounds. Males are larger and heavier.

red_wolf_04-01-13.jpg

Wolf with reddish coat
Red Wolf
The red wolf (Canis rufus) is a close relative of the gray wolf. It is one of the world’s most endangered canids. The last red wolf on record in Missouri was shot in 1950.
Habitat and conservation

Fear of attacks on humans and livestock, and its feeding on game animals, led to unremitting efforts to exterminate the gray wolf. Also, the loss of our continent’s great bison herds eliminated a primary food source of midwestern wolves. By 1900 this species was gone from most of the eastern and central US, and by 1915 its population was greatly reduced in the remaining parts of its range in the western United States, Canada, and Alaska. Today, the gray wolf is understood as an interesting and valuable part of our native wildlife populations. It is protected as an endangered species in much of the US, including Missouri.

Foods

Wolves can hunt in groups and can take live prey ranging from bison, elk, and deer to rabbits and mice. When prey is scarce, they can eat frogs, lizards, large insects, carrion, and garbage. As with many other canids, they supplement their diet with a variety of fruit and vegetable matter.

image of Gray Wolf Timber Wolf Distribution Map
Distribution in Missouri

Considered extirpated from Missouri. Individuals occasionally wander into Missouri from other states, particularly Minnesota, Wisconsin, or Michigan.

Status

A federal Endangered Species in much of the US south of Interstate 80, including Missouri. Apparently secure globally. Extirpated from Missouri. Now, when a seeming wolf appears in our state, biologists use DNA tests to determine if it’s truly a wolf, where it came from, and how it got here. Until wolves breed again in Missouri on their own, they’re considered extirpated.

Life cycle

A diverse and wide-ranging species. The biology of gray wolves is complex and interesting. They are generally monogamous and live in packs led by a single pair of “alpha” wolves. The packs can travel quickly and far. The wolves that have appeared in Missouri in recent years apparently are young animals seeking new territories, away from areas populated by other wolves. A wolf that appeared in Missouri in 2001 was wearing a radio collar and an ear tag linking it to Michigan’s Upper Peninsula, more than 600 miles away.

Human connections

Wolves have been hated and feared — and admired and respected — by humans for millennia. They symbolize wilderness, freedom, and loyalty. Their reintroduction in the West remains contentious among many. Our domestic dogs are a subspecies called Canis lupus familiaris and were bred from wolves.

Ecosystem connections

Wolves are top predators, eating a variety of mammals, particularly large ones that smaller predators can’t take. The absence of top predators leads to an overabundance of animals such as deer. Wolves’ habit of hunting ill or injured animals strengthens the herds of the species they feed upon.

Signs & Tracks

Front track:

  • 4¼–5 inches long
  • 4 toes
  • Comparatively more rounded and wider than hind track.

Hind track:

  • 4 inches long
  • 4 toes
  • Comparatively more egg-shaped than front track.

Other notes:

  • Wolves are rare in Missouri, having been extirpated since the early 1900s; occasional individuals wander here from other states.
  • A federally endangered species protected by law.
  • Look for an X shape in the negative space between the pads.
  • Tracks are larger than domestic dog’s.
  • Stride distance is 30 inches (walking).
Illustration of a single gray wolf track