Thanx for the info. I am reluctant with Emma as the original vet gave her hydromorphon as a pre-anesthesia painkiller and she went heavily sedated. Also, when the new vet went to do the spay yesterday and gave her the meds, her belly, armpit areas and gums went bright red as if she had been exposed to carbon monoxide, when she hadn't. This only lasted for a little while and she was fine. She also has a very mild heart murmur, barely audible, but it would jump to a Grade III and then back to next to nothing and then back up and down. She had the vet stumped. The original vet refused to do the surgery as she was too scared to do it. Before the new vet actually made the incision, she called to talk to me about the heart murmur as I had never actually met her but had dealt with another vet. The vet practice came highly recommended and I had every confidence in them. Just not sure given Emma's history if I should give her the Rimadyl.