Rocky has a little infection going on too because of the anal glands being so full. I had never heard him growling threateningly at a human before until yesterday when I heard the vet expressing his glands. He was furious at me the rest of the day yesterday. Poor baby. He's fine today. The vet recommended putting metamucil in his food twice a week to keep his pooh-poohs nice and big so his glands are less likely to get clogged again. Crossing my fingers it doesn't reoccur.