Everyone loves a good dog birthday party. Sure, the cake has bone-shaped biscuits in it, but who can complain about a pup in a cute birthday hat? 

Unfortunately, a lot of shelter dogs don't know their real birthdays, so picking a date to celebrate can be hard. That's why, in 2008, North Shore Animal League America (NSALA) decided that August 1 would DOGust 1st, the universal birthday for shelter and rescue dogs. 

"We at the North Shore Animal League America, want to encourage everyone to partake in this celebration and demonstrate the importance of rescuing and adopting homeless and abused dogs," J. John Stevenson, President of the NSALA, said. "On August 1, we're offering free adoptions of dogs six months and older for approved adopters. Let's get these lovable pets into homes for real birthday parties!" 

Bounty teamed up with the NSALA and donated $10,000 as well as 500 paper towels for easy clean up. 

To get the word out, NSALA brought some puppies to the mental_floss offices, and, as you can see, it was very exciting:

If you're looking to celebrate the holiday with your puppy pals, blogger Crystal VanTassel-Lopez has just the dessert to get the party started. These doggy birthday cupcakes are safe for dogs and humans alike—just don't eat the dog treat garnish topper.