Get Your Dog Care Questions Answered by Experts
Hello and thank you for requesting me. Do you know if the dog may have played rough and traumatized that area?
Is he holding his mouth shut because you are trying to look in there?
will he still take interest in food and water?
hello, it seems you have gone off line and I will be heading off shortly as well. There are three possibilities here. A soft squishy lump under the jaw area could be due to trauma, a swollen salivary gland (which can be caused by trauma) or an infection from a tooth or other injury.
If the dog is not eating or drinking, acting listless, or has a fever, then it is time to make a vet visit. An infection would need antibiotics which can only be has by a Vet.
here is more in the salivary glands.