Hi and welcome to you and Parker. I'm sorry for the diagnosis! It happened so quickly, but really it's a good thing because you got rid of that bad leg and now Parker is on the road to feeling better. For now, I know it's hard to go through this recovery with him. Here's some things to keep in mind:

• Yes, many dogs and cats will behave in a similar way the first few days or even weeks after surgery. Oftentimes that's a sign that their pain management needs fine tuning. It sounds like your vet gave Parker a standard regimen of pain control, but the dosages and timing may need adjusting. For some dogs that means more medication more often, for other dogs it means less medication at greater intervals. Since we don't know your dog, it's best to have a conversation with your vet first to discuss his pain signals and how to manage with the medication you've been given.
• Rest assured that what he is experiencing is really normal. Keep his activity at pretty much zero right now, at least until stitches come out. He needs rest time, and the only time he should be outside is to potty and then back inside. Keep walks leashed and very, very short to minimize the chance of muscle strain. Remember, it's a LOT of work getting used to walking on three legs. He will get there, on his timeline. 

Be sure to check out our What to Expect articles when you can. Also please consider registering as a member so your future posts won't always need approval. Keep us posted!