Gray wolves are quite variable both in size and coloration, depending on the area where they occur. They somewhat resemble a large German Shepherd dog but have much longer legs and very large feet. Their general coloration is a grizzled gray but there are many other color variations including white and black. A large male gray wolf may be as tall as 3 feet at the shoulder and weigh more than 100 pounds. Female gray wolves tend to be smaller than the males. Gray wolves are powerful animals designed for chasing large prey. Their jaws are very strong with teeth similar to other large meat-eating animals like the lion and tiger. Wolves also possess excellent senses of sight and hearing.