Dog Smacking Lips After Eating. Smacking lips is an action that involves a loud opening and closing of the mouth, usually before or after eating. If i were you, and particularly if he is not eating, i would try to get him in to be seen earlier, today if.
However, if someone is smacking their lips excessively, there could be various underlying problems. This causes irritation and inflammation. If i were you, and particularly if he is not eating, i would try to get him in to be seen earlier, today if.