Do any pet stores or any stores sell birthday supplies for dogs?

Aww i have two cute long haired dachshunds at home :-) and ive given them cookies, cakes, and ice cream for there birthdays lol. They have pet ice cream at wal-mart in the frozen section. I also found the cookies and cakes at wal-mart too but i'm sure they would have good treats at like petco or petsmart. Hope this helps!