It is cute. I don't remember where I first heard it. We kind of just pretend that it's her birthday. We think she was about a year old when we got her, but not 100% sure.
We got one of those genetic tests done on her. She's supposedly 75% Staffordshire pitty, but also Parsons Terrier, American Eskimo, and a few others. No lab, which we thought she had in her!
Post a pic of yours, I'd love to see. Ours was a stray too!