
 Originally Posted by 
PitMaster
					 
				 
				I had to do this a few months back with my oldest one being 16. It was a serious talk with the vet. He kept him comfortable as long as he could but when things started progessing, which I thought happended kinda rapidly it was time. My vet wasn't out to take me for all he could he just let me know it would be best to do it. Basically when he wasn't comfortable anymore and struggling to get around. Vision was going and not very stable on his feet, He was suffering. If your dog is suffering buddy and the vet seems to be struggling to keep him comfortable then it's a break your heart call. Be honest, When your actions to save him are futile it pushes u more to do it. I'm fortunate I have a good vet. It took many to go through.  Maybe a second opinion from a different vet? Before further testing. Keep your chin up, it's hard both ways, Having him there or not.  I dunno...watch for signs like moaning when she lying around, groaning when using the bathroom or just low groaning(not growling) That should let u know how she feels. Maybe growling at other dogs is protective instinct, cuz she uncomfortable and don't wanna be messed with. 
BTW my vet, who is about 60 swears by this diagnostic test. Check the ears, If you stick your finger in his/her ear and it's nasty or has pungent smell, That's usually a sign something going on. It's not just dirty ears. But this is just his basic, quick look over for initial visits. It doesn't really tell you what is happening, but makes u aware to look for things and pay close attention. I understand she already has an underlying problem so It may not apply. Food for thought. Hope u find some answers, hang in there.