Dog drooling can be normal for many pups. But if your dog is drooling a lot more than usual—or if they never drool and then your dog is suddenly drooling excessively—it’s cause for concern.

Excessive drooling in dogs can have a lot of different causes. Here’s some insight on what to check for, what might be causing your dog to drool a lot, and when to seek help from a vet.