96 THE FEEDING OF ANIMALS 



The incisors or front teeth are those which are used 

 for prehension, and by grazing animals for cutting off the 

 grass and other herbages. With the ox, sheep, and goat, 

 incisors are found only in the lower jaw. These move in 

 their sockets and shut against a tough pad on the upper 

 jaw. They are constantly being pushed out of their 

 sockets and wearing off, and with old animals may be 

 so worn away as to leave only the roots. Such animals do 



FIQ. 1. Glands secreting saliva in man, parotid, sublingual, 

 subm axillary. 



not graze successfully. With the horse and pig, incisors 

 are found in equal numbers in both jaws. 



The molars are the grinding teeth. Those of the horse 

 sometimes need filing on the edges in order to prevent 

 irritation and soreness of the adjacent tissues. A diseased 



