I have six dogs and they all get exactly the same amount of exercise, some need their claws cutting and some don't although they all need their dew claws doing. Find a groomer who will do them for you, cheaper than the vet. If you want to do it yourself then get him in a confined space such as in the bathroom or up against kitchen cabinets, wrap the lead round something so he can't get away, make him sit and stand over him from behind and lift a foot up and hold it very firmly. Wait till he gives in and just cut the tips off to start with. Give treats in between cutting each foot (or even each nail). Although they don't bite I muzzle some of my small dogs because it gives them something to think about and by the time they have snuffled and snorted and shook their heads I have cut their nails without them realising.