Complex sentence: Carnivores reduced the number of their teeth as they specialized their teeth for eating meat instead of grinding plant or insect matter, and cats have the fewest number of teeth of any other carnivore group, and machairodonts reduce the number even further.
Split into simpler sentences: Carnivores reduced the number of their teeth as they specialized their teeth for eating meat instead of grinding plant or insect matter. Cats have the fewest number of teeth of any carnivore group, and machairodonts reduce the number even further.