When Snoopy is active for a long period of time, like our six mile walk yesterday, his right leg twists inward while he walks and his toes point out. It doesn't seem to bother him, but is it his hip or his knee?
Is there anything I can do as far as strengthening exercises to help prevent a ligament tear or something else major?

It was something I noticed in both hindlegs when we first got him, but I figured they were just weak from being in a crate almost 24/7, but the right leg still does it. I don't think I'll do weight pull with him like I'd planned, I'm to afraid to do some major damage.

Did the breeder have the hips checked on hips on his parents? I would be a little worried if it's something that happens often. My best advice would be to take him to the vet and have some x-rays done to see if anything shows up.

I didn't get him from a breeder and the lady I got him from never got back to me on information on his breeder. I'm assuming they didn't though. I don't know if I want to take him to the vet for xrays unless it starts to bother him, at this point it doesn't slow him down at all.

So can I get him checked at a normal vet or do I have to go to a specialist?

When I got home Snoopy was fine but after they were done doing their wiggly-butt greetings his knee was acting up again :/

Any normal vet should be able to identify abnormalities with xrays or even with a simple physical exam in some cases.

Alright, I'll have to call the vet's office and find out if any of the vets have experience with back leg issues. I'm guessing hip dysplasia or LP, I'm still not sure.