My name is***** and I am sorry to hear that your dog is drooling this evening. Thank you for being patient waiting for a response, there are numerous questions this evening. Is he still drooling now?
Drooling can be related to a few different things:
The first would be nausea. Does he normally eat bread and cheese? Could there be anything else that he ate that upset his stomach such as a bug or other human food? If this happens again, you can try giving him Pepcid (over the counter). The dose is about 0.5mg per pound, so a 60 pound dog would take 30mg. Also watch out for vomiting or diarrhea as some dogs will drool before one of these problems as well.
Another cause of nausea is something very foul tasting in the mouth. I see this commonly with dogs that eat toads, but I know they probably aren't out this time of year. Stink bugs, some plants and some chemicals can also do the same thing. Helping the dog rinse their mouth by pointing their nose downward and squirting water in the side of the cheek can help.
Lastly, I have seen some dogs drool from anxiety and nervousness. This is more difficult to diagnose, so I would watch him closely to see if there is a pattern with activities that make him anxious (visitors, vet visits, storms, etc).
Does this help? Do you have any more questions?
Kansas State University,
College of Veterinary Medicine Class of 2001