Cat Is Drooling. If your cat is drooling, it could be for physical reasons, says ethan nunnally, dvm, of large & small animal medicine & surgery, animal health center of albia, iowa. Since this drooling is caused by a disease, you expect that the saliva coming out from the mouth of your cat will be giving off an unpleasant smell and may often be tinged with blood.

Organ disease and exposure to toxins may lead to nausea, which in turn can cause drooling. Drooling in cats can be caused by a variety of things, including mouth ulcers, tooth injuries, gum disease, resorptive lesions, and infections. It is pretty normal for cats to drool in response to extremely stressful situations.