I'd definately get him checked out by a vet. Goldie used to be aggressive towards the other dogs. She would lash out with no pattern. I could never figure out when she was going to be nasty and when she would get along so she ended up very isolated and not a happy dog. Then she started snapping at me occasionally. She never bit, but she would snap at my hands or a brush.

It turns out that she was in pain, but not constant pain. She has an old hip injury that was never treated, probably kicked when she was a stray. Certain movements and pressure points caused her pain. When that happened she lashed out at whoever or whatever was closest to her. She's been on Meloxicam since last summer and she's a different dog. She's happy and playful. She lives with Chase in her pen and occasionally a couple other male dogs. She hasn't had a fight in ages. She still hates Preacher, but that has nothing to do with pain. It's a mutual dislike that has been there forever.

Meloxicam is the human version of Metacam. It's much cheaper than Metacam for long term use. Goldie gets a liver panel every six months to make sure it's not hurting her liver. So far it's not., Her blood work is great--she's due for a repeat on Monday. Frankly, even if it does start to affect her liver, she's staying on it or something else. I'd rather have her live a shorter, but happy life than a long, miserable one.