Your costs will vary with the level of care you want to spend on them. Some feed better foods etc. I get shots at the vet so they have proper paperwork so I can board them or send to day camp for the day when they get cabin fever. I get them dentals every other year. But I have no children so I can spend more on my boys. Either way this does not have any bearing on how much you care for your pets or how happy they are. Your interaction with them in their pack is the most important part of a happy dog.