The wormer cost $5 a bottle and we do a preventative treatment every six months BUT puppies need it every 3 months. The vet will do this to for a small fee, you could do a deworm and nail trim at the vet just to keep it routine. Dogs also need to be treated heartworm and this is especially true as they get older. I can't really tell you how often because our vet keeps track for us and I think it depends on where you live as well due to mosquitoes and other factors.
Then there is the "start up" costs leash, collar/harness, food dishes, kennel/crate. This can get expensive kind of quickly if you aren't careful.
at 2:34 PM on Oct. 20, 2009