Brown-gray fur, with a hint of reddish coloring. The back legs are longer, and feet have four webbed-like toes. The front legs are shorter, with feet having only 3 toes. On the top of the cylinder-shaped head are the eyes, ears, and nostrils. Males weigh between 75-140 lbs., and females are between 80-145 lbs. Both sexes are 1.5 - 2 feet tall at the shoulder and between 3.5 – 4.5 feet long.