DISEASES OF THE HOG. 25 



The mouth of the hog is large and the labial fis- 

 sures extend far back; the upper lip is blended 

 with the snout; the canine teeth are well devel- 

 oped, especially in the male; the low^er tusks are 

 long and curved outwards and upwards; the upper 

 ones pass dow^nw^ards and outw^ards, and they con- 

 tinue to grow during the life of the animal. 



