Its fur is thick and usually grey, but can be, red, brown, black or almost white.
Wolves vary in size, depending on which part of the world they come from.
They can be 1.5m long and up to 80cm high. They weigh between 16kg and 60kg. Males are bigger than females. The biggest wolves tend to live in cold regions and the smallest in semi-desert regions. Their diet is very variable, but they feed mainly on large hoofed animals such as moose, caribou, deer and elk.