I don't take mine in regularly. He runs, he jumps, he eats, he craps, he's happy. They don't do any sort of tests for a checkup around here, that I know of. They just give a physical and shots. No heartworm here and I've never had a vet ask for a fecal if the animal appeared A OK otherwise. I don't worry about vaccining him for everything known to man... but some time soon I'll take him in for a rabies booster and a bordatella. Those two are necessary and handy respectively.