
Get your vet to check your dogs mouth and throat for ulcers. I had two cavs that I unfortunatly lost age 7yrs and just 4yrs. Vets do not look for the problem as its quite rare in dogs. My first one was not diagnosed and the ulcers were only found in him when he was put under anesthetic to look down his throat and they found the ulceration deep down. Various treatments were tried but he deterioated so much we had to let him go in the end.
Then 6 months later my girl went down with the same thing (hers could be seen in the mouth too) and samples were sent off and it was diagnosed as eosinophilic granuloma. She was tried on many treatments but unfortunatly didn't respond.
Don't be alarmed as although not curable you can get them into remission. It is an auto immune disease where the body attacks itself. Ours we believe was caused by vaccination.
I think many cases go undiagnosed as its just not looked for in dogs.
Hopefully with yours though it is just to do with the soft palette and nothing to worry about. I have not put this to alarm you as its probaly not this, just to alert you if you are worried as something to get ruled out.
Bev