She's a purebred chocolate Labrador Retriever, very small, very active. Her mom is from a very hot field trial line (Storm's Riptide Star x a Candlewoods bitch) and her father is an English dog. We do obedience, agility trials, and hunt tests. Even in this hot weather she is alert and moving almost all the time. Long as I move with her, I burn calories like crazy.
I can highly recommend a Lab if you want LOTS of exercise. < g >