Mountain goats, bighorn sheep, mule deer, mountain lions, marmots, beaver, and pikas are common residents. Grizzly bears occasionally prey on small mammals, such as marmots, ground squirrels, lemmings, and voles. These include ground squirrels, marmots, chipmunks, lizards, snakes, hawks, and eagles. Talus slopes are home to small mammals such as pikas and yellow-bellied marmots. Other fauna include marmots and pikas at high elevations. Fauna include two herds of bighorn sheep, mule deer, marmots and feral horses. It hunts for larger prey than the European polecat, including pikas and marmots. Eight species of squirrels, chipmunks, and marmots occur in Pennsylvania. There are 75 mammal species, among them marmots, Alpine ibex, and chamois. They are closely related to squirrels, chipmunks, and marmots. Among these are rock hyraxes, hares, marmots and, in one case, a long monitor lizard. Ground squirrels and marmots pass the winter in hibernation. Twenty-nine species of squirrels, chipmunks, and marmots occur in California. Even much bigger ground squirrels such as prairie dogs and marmots are attacked on occasion. This particular marmot species is large compared to some other marmots, and most other rodents.