Sheltie is Limping

[laddiesowner]

I am the proud owner of a 2 year old male Sheltie named Laddie
He is so active, loves to run, and JUMP...and when I say jump, I mean jump.

Since last evening, I noticed he has a limp and seems to be favouring his right rear leg. I am trying not to panic, but he is very much an important and loved part of our family, and feel that I should rush him right to the vet.

Should I wait and see if maybe he has injured himself, and if it corrects itself over the next few days, OR Should I get him into the vet right away

He is still eating and drinking, and tries to still run and play....just concerned.

Thanks