Canines cool themselves off by panting. When a Beagle is exercising and the body becomes hot, the dog will pant in response to this. This type of heavy breathing can cause saliva to be expelled out with the breaths, causing the Beagle to drool. If this becomes excessive, it is a sign to take a break. Preferably, an owner will want to bring the dog into the shade, offering rest and a drink of cold water.
Note – It is a good idea to bring along water for moderate exercise
jaunts away from home. A bottle of water and a pop out travel bowl can help cool the Beagle down and give him needed hydration.
When a dog is in a deep sleep, the jaw muscles fully relax. This causes the mouth to open, allowing drool to leak out. With some, the mouth may appear to be closed, however overlapping lips may hide this…the jaw will actually be open enough for saliva to drip out.