What is diastema? What is its role in rabbits?

Hey Sarah! A diastema is a space separating teeth of different functions, especially that between the biting teeth (incisors and canines) and grinding teeth (premolars and molars). Rabbits don't have canines, so the diastema helps with gnawing and chewing of plants. This is really helpful, considering rabbits are herbivores! Hope that helps!