Bones are essential in a raw diet to provide necessary calcium and other nutrients which play a vital role in creating firm stool. Raw bones are soft and pliable and easily digested. Plus, chewing bones keeps teeth naturally clean by removing any plaque on teeth.
Cats are obligate carnivores. Cats living in the wild chase and kill small prey such as rodents, mice, squirrels, rabbits, reptiles, amphibians, birds, insects and small fish. Feeding raw food to cats is our way of getting as close as is practical to a diet that they evolved to eat. Think about how cats eat food in the wild, they eat the whole thing from head to toe. That means hair, feathers, flesh, bones, blood, entrails, organs, glands, digested and undigested food in the stomach and intestines, head, feet and tail. Cats' digestive systems are designed to easily digest and absorb nutrients from all parts of their food.