Why dogs drool and when to be concerned

What is "normal" drooling?

Drool is an excessive flow of saliva that accumulates in the mouth. Some breeds such as Saint Bernard or Bloodhound are more prone to drooling.

Dogs will usually drool when there's appetising food in sight or on the contrary, when they taste something bad like medication.

However, if your dog is unable to swallow normal amounts of saliva or produces too much of it, it can sometimes indicate that there is an underlying health issue.

Mouth and Throat conditions

If it looks like your dog struggles to swallow, which leads to saliva dripping from their mouth, it could be a symptom of a fractured tooth, tartar build up or mouth infection. It can also be a sign that a tumour inside the mouth or throat prevents swallowing.

To prevent this, ensure to stay on top of your dog's dental hygiene, book them in for a dental check and regularly inspect their mouth, looking for any sign of lump or inflammation.

Digestive system issues

An upset stomach can lead to drooling. If your dog starts dripping saliva during a car trip, this is a sign of motion sickness and it should stop once they get out of the car. 

If your dog has eaten something they shouldn't or ingested toxic substances, one of the first symptoms will be drooling. In this case, it's important to seek help as quickly as possible. 

Other issues can cause drooling, such as heat stroke. If you notice any increase in drooling or a change in your dog's behaviour, it's always best to have them checked by the vet.