Many people are surprised to learn that dogs possess tonsils. Sometimes these paired lymph-node-like organs in the back of a dog's throat become inflamed and greatly enlarged. Affected dogs may lose their appetites because of a sore throat, salivate excessively, and/or develop soft, dry coughs.
Often the inflamed tonsils respond quickly to appropriate antibiotic therapy. Sometimes, if your dog has experienced recurrent or chronic tonsillitis, your vet may recommend surgical removal of the tonsils. This operation is relatively minor, with low risk of complications. A bland, soft diet is fed for a day or 2 after the tonsillectomy, recovery is usually quite rapid.