We celebrate both birthdays and adoption days - basically, just with a new toy and extra T-R-E-A-T-S! My Paula's 3rd birthday is next Tuesday (7-31), and I already picked out a honking goose toy (my nickname for Paula is "Goose"!
Since we found Pup, and we know that she is within a month or two in age of my parents' dog, Checkers (Pup's best pal!), the two of them celebrate their birthday together! Last year, their first birthday, my mom made a biscuit cake, and made all of our dogs wear paper party hats! They all went home with goody bags, too!