Deer do not have teeth on the top of their mouths, but they do have small teeth on the bottom. In lieu of teeth, the top jaw is equipped with a hard palate that the deer uses in the same way it would use teeth.
Molars, incisors and canines are located in the back of the deer's mouth and are used for chewing. Deer are herbivores that eat only plants. Their diet changes with the habitat in which they are living, although generally consists of plants during the spring and summer with a fall diet of nuts and a winter diet of twigs and woody plants.
The female deer is known as a doe or cow, with the male being referred to as a buck or a stag. Baby deer are called calves or fawns.