Jaw structures of carnivores, herbivores, omnivores and gnawing animals

Im doing a biology assigment and i have to compare the jaw structure of carnivores, herbivores, omnivores and gnawing animals. Im really confused and cant seem to find any information :(
If anyone could help me with this question that would be a big help!!!

Carnivores - Almost all carnivores have 6 lower and upper incisors, while molar teeth are modified to sharp teeth called Carnassial teeth that help them to slice off meat. Canines are used to grip and puncture the prey. They have a shorter mandible or lower jaw. They may have Diastema, the gap between the molars and incisors to accommodate canines. They have strong jaws.

Herbivores - They have more number of molars that are ridge to chew herbage. Some herbivores have incisors. They have a bony plate that they use for tearing off grasses. They have deep long mandible required for large muscle attachment. Such mandible helps them to chew herbage. They also have diastema which they use to move around large quantity of food and ensure easier mastification. Herbivores like cow, giraffe, goat and horse have strong back teeth to chew the food well.

Omnivores - They have low crowned molar teeth. they have incisors and canines. They use incisors to tear off food. They are also used for grooming in animals like primates. They have comparatively shorter mandible than the herbivores. Diastema is not present.