All mammals share some basic body parts. These characteristics include certain features of their skin and hair, skeleton and internal organ system. Some mammals have a thick coat of hair to provide warmth. Almost all mammals have seven bones in their neck. What Mammals Eat Most mammals are herbivorous, that is, they eat plants.
Some mammals are carnivorous.
They eat animal flesh. Some mammals eat both plants and animals. They are omnivorous mammals. They have teeth that can grind up flesh. They include bears, hogs, opossums, and human beings.