WHY DO RUMINANTS FIRSTLY SWALLOW FOOD DIGEST IT IN STOMACH THEN AGAIN BRING IT TO MOUTH THEN CHEW? WHY CANT WE DO IT?
Ruminants chew their cud again to break it down even more as plant materials on which they feed are more complex and raw which takes more time to be broken down and digest. As during taking in food, they are in danger of getting hunted, they eat at faster rate and as much as possible which does not give them enough time to chew their food . So, their food gets stored in a part of their stomach until the animal finds a safe place to eat. Then the animal brings up the food or cud to chew.
The basic food of ruminants is grass. Grass is rich in cellulose, which cannot be digested by humans and many other animals. Ruminants have a large sac-like structure between the small and large intestine. Cellulose is digested in this region by the action of certain cellulose-digesting bacteria, which are absent in humans.