250 The Diseases of Animals 
ing the food, which is shown by holding the head on 
one side; “quidding” the food, that is, chewing up 
quids and spitting them out; and “driving on one line.” 
Frequently an animal will stop eating 
suddenly; or, when drinking cold 
water, will stop and slobber the water, 
evincing pain. In many cases of dis- 
eased molars, the saliva has a disagree- 
able, fetid odor. 
When there is much difficulty and 
pain in eating, the animal falls away 
in flesh. In horses that are subject Fig 47. Parrot-mouth. 
to attacks of colic or indigestion the teeth should 
always be examined, as the trouble may be due to 
improper mastication of the food. When the roots 
of molars are ulcerated, the swelling often breaks 
and discharges pus from an opening on the side of 
the face or the bottom of the lower jaw; these open- 
ings rarely heal permanently until the ulcerated tooth 
is removed. 
Uleerated, decayed, split and badly broken teeth 
should be extracted with forceps, never punched out, 
as the latter method is likely to break the tooth, leaving 
pieces of the roots in the jaw, where they cannot be 
removed and are a source of much trouble. It is 
sometimes necessary, however, to trephine or cut a 
hole through the jaw-bone, and then punch the 
tooth out. After such an operation, only milk and 
gruels should be allowed for ten days, as solid food is 
liable to get into the wound and keep it from healing. 
In all cases of removal of a tooth, the opposite tooth 
