Thunder seems to limp on his back right leg when he runs... I am not sure if it is limping even or just an uneven gait. There doesn't seem to be any pain. The leg seems to be going out wider than it should, sort of... I am wondering if this is a sign of hip problems, or could it be other things? Maybe he is just getting used to running? I will be taking him to the vet to be neutered in 2 months or so and will do an x-ray on the hips..He is 18 weeks right now...