Have you found that the cat’s mouth is very characteristic, the nose under the seemingly decorative bifurcations, is the cat like a rabbit, is also a three lobed mouth? Or is the cat sick?
The three valve mouth is more suitable for biting the neck of animals. The teeth of cats are not only used for attacking, but also for biting food. They have 30 teeth, of which four sharp curved canine teeth are the sharpest. They can clamp prey and have enough force to crush their bones. However, because the upper and lower jaw are connected by joints, the jaw can only move up and down, but can not move left and right, So the three valve mouth was formed in the evolution, so cats can’t grind their teeth. When cats close their jaws, at the same time, the tri valve mouth shrinks to facilitate retraction. In a word, it is the result of long-term evolution. It can hunt other creatures and eat with them, thus resulting in the tri valve mouth.
The physiological characteristics of the rabbit’s three lobed mouth are conducive to turning the front teeth out. When eating very low grass, it will not be blocked by the lips, and the eating efficiency is higher, which is determined by the evolution direction. Although horses, cattle, sheep and other Artiodactyla are herbivores, their incisors are well-developed and have constancy. The incisors of adult rabbits do not stop growing and need to be ground short on hard objects. The trivalved mouth is designed to accommodate the growing incisors of rodents, so as not to “hold” the mouth. Other rodents also have a three valve mouth.
But some people say that although the cat looks like a three lobed mouth, it doesn’t separate in the middle. In fact, there are different reasons for the three lobed mouths of cats and rabbits. Cats belong to a family of Carnivora of Mammalia, and rabbits belong to the order Lagomorpha of Mammalia, so although they all seem to have three valve mouths, they are essentially different.