When we adopted Brady, we were told he was a Saint Bernard / Collie mix. It became apparent quickly that was not true! We think he may have some Pointer and Jack Russell in him, but who knows! Brady always has a ton of energy and is very, very athletic. We recently got him a little brother in hopes that would slow him down, but if anything, that's only increased his energy level and now there are two of them sprinting around our yard!