Dogs do not worry about age. That's a human obsession.
If you give a dog dog-cake and treats and toys on its birthday he will be happy. Of course if you do this on a day that is not his birthday, he will turn up his nose, say "Speak to the paw" and go and baptize your dress shoes.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC