Teeth

The shape of a tooth can tell a lot about its function as well as a lot about what that specific animal looked like. Lophodont's are associated with an herbivorous deit. These teeth have a flat crown and ridges along the teeth that are for grinding. Selenodont's are also associated with a herbivorous diet these teeth are also flat but have a curved ridges. Some carnivores have something that is called the carnassial, these teeth are specialized in cutting and can be found towards the back. The upper tooth is known as a premolar and the bottom tooth is the first molar. Carnivorous teeth are a lot sharper in comparison to herbivorous teeth. 

There are also four types of teeth the inscisors, canines, premolar, and molars. The amount of each teeth varies by animal and even the same breed can have different amount of teeth for each type. However, the variation is not super drastic. In order for some animals such as cats to have such powerful teeth they need large muscles to help them use them. Larger animals require larger teeth since they need more food for survival.