Just like humans dogs saliva contains enzymes that start off the digesting process. Breeds that have a loose upper lip like the Saint Bernard, Newfoundland, and Bloodhound can suffer from excessive drooling.

A beautiful red coated Setter drooling
However if your dog doesn’t have a loose upper lip then excessive drooling can be a sign of mouth or gum disease so a trip to the vets may be necessary.
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