Okay, so most of you already know that I took my female husky, Kayobi, to have her spayed the other day. They prescribed her some pain medication to take home with her to make her a little more comfortable. They prescribed her Rimadyl, 1/2 pill twice daily. After her second dose and being home the first day, she started acting a bit aggressive toward my other pup, Hank. She wouldn't let him eat and if he came near her she was growling and snapping at him. They were both in the bedroom with me and the baby, Jayden, when I was getting him ready for a bath. I turned around and took two steps literally in my bathroom and I heard Jayden crying and heard a thump on my floor. I came running into the bedroom to find Jayden lying on the floor (6 inches below the bed as my bed doesn't sit high off the floor) with Kayobi's mouth on his diaper. She had bit down on his diaper and had dragged him off of the bed and was still dragging him away. Jayden managed to get a couple of superficial puncture wounds in his diaper area and was bruised down there a bit, but nothing too bad. After this incident took place, I googled the side effects of Rimadyl and some of them included lethargic, aggressiveness, hyperactiveness, etc. So, I'm pretty sure that this was an encounter of Kayobi reacting to the drugs and not her true temperament, because when we first brought her home she didn't pay much attention to the babies and Hank. She also hasn't paid attention to Hank eating out of the same dish as her at the same time, so I'm giving her a chance to show me that it was the medication that she was on and wasn't her showing her true colors. I'm also just so mad at the vet for not explaining to me that there may be side effects to the pain medication and what those side effects may have been. I should have been more responsible and looked up side effects before giving her the medicine, but I also trusted the vet at the same time and apparently I need to be more proactive. Jayden is doing fine and doesn't even act like anything happened at all and since this happened I have stopped her Rimadyl and she has already changed back to the way she was.