Quote Originally Posted by Inknsteel View Post
Sorry for your loss...

The "sunning his neck" behavior you are describing sounds to me more like stargazing. That could be signs of respiratory infection or possibly IBD. Did you notice any wheezing, clicking or popping sounds when he would breathe? Did you notice any bubbles or mucous coming from the mouth in the days before he died?
He did make some strange click noise...not often, but one time it was REALLY REALLY loud...I heard it from another room and went to see what was going on. I was long and drawn out. I thought it was just some noise he was making at the cat because he was irritated, scared...or thought it looked tasty.