Periodontal disease is considered as an important cause of drooling in dogs. If your bulldog has not been given regular dental checkup and hygiene, there is a possibility of tartar build up, an important predisposing factor of gum infections.

A decaying tooth or a fractured one can also cause drooling. If your bulldog suffers from certain teeth problems, bad breath or halitosis may be one of the signs that you can easily find out on your own.

Drooling is also almost always present when some toxic substance has been ingested by your dog. It is often observed a few minutes after ingestion of the poisonous substance. In most cases of poisoning, vomiting, diarrhea, and seizures may accompany drooling.

Chocolates, grapes, raisins, garlic or xylitol in chewing gum can be toxic for your dog. When intentionally given or accidentally accessed and ingested, initial signs of poisoning will be drooling.

The pain caused by injuries or tumors inside the mouth can also lead to drooling. You can easily spot any of these abnormalities and bring it to the attention of your veterinarian.

When a bone splinter or an object gets stuck in your dog’s throat, teeth, or gums, drooling is also a common manifestation. You can assess the situation to determine whether you can easily move the offending object without causing unnecessary harm or if it is not possible, you may need to seek the professional opinion of your vet.

Dogs infected with rabies usually drool because the virus that causes the disease attacks the nervous system and causes paralysis of the throat muscles thus the dog drools because it is unable to swallow its saliva.

Drooling may also indicate Liver Disease and many other health conditions that need to be diagnosed in order to correctly address the problem.