Wolf fur is usually gray or brown mixed with black, white and tan. During the winter, fur gets darker on the neck and rump. Wolf pups are born with fuzzy, dark hair. As they get older, their hair lightens. Old wolves have gray-white hair.
The color of a wolf's fur can vary, although gray is the most common color. Wolves may also have black, reddish or white fur. In fact, the wolf has one of the widest ranges of color of any mammal in North America. The color helps to camouflage the wolf by allowing it to blend into its surroundings. Wolves that live in dark wooded areas, often have dark fur. In places where the plants change colors throughout the year, the wolves that inhabit the area can have fur of many shades of color.
The Red Wolf (Canis rufus) and the Gray Wolf (Canis lupus) are the two species of wolf found in North America. Notice the differences in both the color and length of fur.
Wolves have two kinds of hairs. There are the long, stiff hairs of the outer coat, called "guard hairs". Wolves also have an "undercoat" of soft fur which grows thick in the winter and helps to insulate its body from the cold. This hair is shed in the spring and summer in large sheets and hunks.
The outer layer of hair lies in three "capes" on the wolf's back. These hairs grow in bundles and may be nearly five inches long. Water runs off a wolf's fur, keeping its underfur dry and warm. These layers of fur may be nearly two and a half inches thick and help keep a wolf warm even in temperatures reaching 40 degrees (F) below zero. The wolf will also use its tail to keep warm in winter by wrapping it around its face when lying down.
Wolves use their hair to communicate. By raising or flattening its hair, a wolf may signal aggression, anger or dominance. By holding its "hackles", or the hair on the back of its neck, stiff, for instance, a wolf signals aggression or dominance. The hair around the face can also puff out making the wolf's aggressive stare look even larger to a potential enemy.
Source: http://clustera.cesa10.k12.wi.us/cluste ... st/fur.htm
Wolf Pelage MaterialWolf fur color may range from pure black to pure white, with any tint or shade of gray, tan, cream, ocher (yellow-gold), sienna (reddish brown), and brown between. On wolves having light and dark-patterned fur, the markings tend to be lighter on the ventral (belly) side of the body and graduate to darker/longer/thicker fur on the dorsal (back) side. The ears, forehead, and top of the muzzle are usually of a short/course/lighter fur, mingled of dark and/or mid pelage tones with the underside of the muzzle and throat being of lighter pelage tones. The legs and paws also have short/course/lighter fur. The tail is generally covered with a long/thick/bushy fur, the color scheme being similar to that of the rest of the wolf; dark on top and lighter on the bottom. Light-colored wolves may even have a dark spot of fur covering the precaudal scent gland.
(The texture of the fur undergoes transitions from the wolf's nose to the tip of its tail)
Nose & Legs: Short, velvet-like fur
Neck: Thick and long fur
Ventral: Clumped and long fur
Dorsal: Medium-length fur
Tail: Bushy fur
The colorization is unique through the entire length of the body and each hair follicle has unique color ticking from root to tip.
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Wolf Coat Reference