dog swollen salivary gland
Salivary Mucocele in Dogs. An oral or salivary mucocele refers to a swelling of the soft connective tissues in the dog's mouth. The swelling appears like mucus-filled sack, and is more than three times as likely to form in dogs than in cats. However, all dog breeds are susceptible to oral and salivary mucoceles.ome of the most common signs of oral and salivary mucoceles are: 1  Facial swelling. 2  Oral pain and swelling. 3  Blood in the saliva. 4  Difficulty swallowing. 5  Eye pressure and pain. 6  Respiratory disease or difficulties breathing. 7  Soft, developing masses in the neck (cervical).