Thank you, both of you! I don't remember the exact dosages of his pain medication, but he started out on codeine, gabapentin, and carprofen, of which I varied the timing. He also had a nerve block shot that was supposed to last 72 hours. When that wore off, his pain signals increased, especially as it was getting to be time for his next dose. His third day home after surgery was his worst day, and then it slowly started to get better. On day eight, he really wanted to get up and run around, and from then until the stitches were out on day 14, he was a nightmare to keep calm. We got all of the brain games we could manage to try to keep him occupied (thanks to the Tripawd recommendations!) and we had him cornered in a specific room, and it was still pretty close to a full-time job. The shivering occurred on days 10, 12, and 13, and didn't seem to have any connection to his pills and/or his outside trips. They always start when he's awake, and then he pretty much always goes to sleep. This is the first time that they have lasted overnight.

On day 14, the vet told us he was off any activity restrictions except stairs, so we let him roam the house but kept the stairs blocked off. I still ramped up his outside activity pretty slowly; I didn't want him to push it. He's so young and energetic and he has no sense of self-preservation!

He seemed fine yesterday, but I restricted his movement anyway to make him rest. I'll set up a physical therapy appointment as well; thanks for the recommendation. I appreciate you both taking the time! Navigating the symptoms is really hard; it really feels like reading tea leaves sometimes.