I just read this thread. I'm glad Scampers recovered from his surgery and hope he is continuing to do well. Many years ago, I used to have two guinea pigs -- Cocoa and Krispie. Krispie had no health issues, but Cocoa ended up having diabetes and needing daily insulin shots. I adopted both piggies from a teacher who had to re-home her classroom pets. Again, I'm glad you found something to motivate Scampers to get around and didn't have to take the drastic step of putting him to sleep. Sounds like the vet facility you use was a good one, but Scampers just needed a little more motivation to get moving. If you're still on this forum, how are your little piggies doing now?