Had to make that tough decision yesterday. My 13yr. old border collie Buddy has been having trouble with his hips for a while now and with his vision and was getting worse. I came home from work and he was down, back legs not moving at all, and having trouble breathing. Took him to my vet and we agreed that putting him to sleep was the right thing to do. Very tough to make that decision, but I know he isn't suffering anymore. My other border collie died about a year and a half ago, so I don't have any pets left. I will probably get another dog sometime down the road, but not for a while. RIP Buddy.