The crown of a tooth is located above the gum. The root of a tooth is located below the gum. Although some species are lacking a particular type of tooth, there are four types of teeth . Canines - pointed for puncturing and tearing. Molars flattened for grinding and crushing.
Carnivores have a full set of teeth.
The teeth of deer are quite different. The United States only has 11 of the 19 orders of mammals. List 2 of the orders, with an animal example, that are not native to the United States. Describe the mammary glands of the Duck-billed Platypus. Most male mammals have rudimentary mammary structures.