Common symptoms of oral cancer in dogs include excessive drooling, bad breath and difficulty eating. Bleeding from the mouth, weight loss and loose teeth are other common symptoms. More » Pets & Animals Pets Dogs

Mouth cancer, or oral cancer, includes cancers of the tongue, cheeks, floor of the mouth, sinuses, hard and soft palate, or throat, according to WebMD. Oral cancer first appears as a persistent sore or growth in the mout... More » Health Conditions & Diseases Cancer

The early signs of oral cancer include persistent red or white patches in the mouth, ulcers in the mouth that do not heal, progressive enlargement or swelling in the mouth and unusual surface changes, notes the Oral Canc... More » Health Conditions & Diseases Cancer

Symptoms of tongue cancer, also called oral cancer, include change in voice, difficulty chewing and swallowing, numbness in the tongue and mouth, unexplained bleeding in the mouth, mouth pain, appearance of bumps on the ... More »

Foam coming from a dog's mouth might be caused by exercise, anxiety, nausea, ingestion of a bad-tasting substance, a dental disease, liver or kidney disease, difficulty swallowing, poisoning, a seizure, a side effect of ... More »

Heartworm disease is often asymptomatic, reports petMD, but as the worms cause damage, dogs can begin to suffer from shortness of breath, coughing, resistance and intolerance to exercise, and, in severe cases, fainting a... More » Pets & Animals Pets Dogs

Signs and symptoms of a snake bite include swelling, bleeding, extreme pain, weakness and shortness of breath, according to WebMD. Bitten dogs may also experience low blood pressure, renal failure or dead tissue surround... More » Pets & Animals Pets Dogs