Type of animal science: Classification Fields of study: Anatomy, ecology, evolutionary science, physiology, reproduction science, systematics,
wildlife ecology, zoology At least eighty species of rabbits, hares, and pikas have been identified in the order Lagomorpha. Lagomorphs constitute
approximately 2 percent of the known four thousand mammalian species.
Type of animal science: Classification Fields of study: Anatomy, systematics (taxonomy), zoology Cartilaginous fishes constitute one of the seven living classes of vertebrates. There are about seven hundred living
species of sharks, rays, skates, and ratfishes in this vertebrate group that has ancient origins.
Type of animal science: Anatomy, classification, ecology, reproduction Fields of study: Anatomy, zoology Reindeer are deer native to subarctic and arctic regions. Males and females have antlers. Reindeer migrate in herds of
up to 200,000. Imported into Alaska and Canada, they are valuable resources.
Type of animal science:Classification Fields of study: Anatomy, vertebrate biology, physiology About two thousand species of rodents, the gnawing mammals, are classified in the order Rodentia. They are found
worldwide, in trees, on the ground, underground, and in partly aquatic environments. Rodents are fur sources, pets,
laboratory animals, and pests.