The average size of the mule deer's height is 80-106cm. Their weight can very males are 121-331lbs, Females about 150. Mule Deer have brown fur with tints of red in the summer, in the winter they have a dark grey color. The black tipped tail is easily seen on their white rump. The eyes are a dark brown, when they are shined on by a light they reflect and they have long eye lashes. The nostrils are black, moist, bumpy and they have small hairs. The ears are where they get their name because they are big like a mule, they are grey in color and have greyish/white hairs. The ears play a huge role to sense out danger. The symmetry of a deer's face is the same as the others of the same species. The antlers can be symmetrical as well but typically aren't.