Aging 4 legged friends

One day they're puppies, and it seems like you blink your eyes and they are old and tired. We give our 2 Shitzoos all the health care they need, as far as going to the Vet to have checkups, heartworm pills, flea prevention medicine, etc. Another thing I started doing years ago, with the 2 we had before these, is I NEVER,EVER,NEVER...EVER, EVER walk by them without speaking to them and rubbing their little ol heads. All a dog wants is love and attention, and they give it back ten fold. God love em......their little lives just aren't long enough.