Animals chewing on stuff

cows, buffaloes and goats are chewing and relaxing.The reason is that cows must chew their food twice in order to digest it properly. Cows spend nearly eight hours out of every day chewing their cud. This plus normal chewing of food can total upwards of 40,000 jaw movements per day. When a cow first takes a bite, it chews just enough to moisten the food.