They use their big and strong teeth in getting or eating food.
Herbivores
those that grind their food, which would be herbivores.
I think plants because dinosaurs that have flat teeth eat plants
They only eat plants.
the ones that ones that can rip food...which are fangs.
Animals with hooves usually have flat wider teeth for grinding in back of the mouth and roundish front teeth for pulling. Members of the deer family have only bottom front teeth.
I think carnivorous animals use their teeth as knife blades
For the same reason as humans. Teeth are essential for the mastication (chewing) stage of digestion. Teeth can also be used as a defence mechanism for many animals.
animals with sharp teeth
They're called "teeth".
An animals teeth are not often healthy and that is why there is toothpaste and brushes for dog/cat teeth. When you take your dog to the vet he looks at the teeth. Wild animals are often missing teeth and animals in zoos get dental care.
Well there are no animals without teeth unless you were to pull them, an animal were to lose them, and natural causes so all animals have teeth