2yr old boxer with baby teeth

Question
I have a boxer that I rescued that still has her front baby teeth. I was told when I rescued her that she was 2years old and had one litter. When I took her to the Vet she guessed her at maybe a year and possibly breeding on her first heat. Since she is now appx 2yrs old and still has her front baby teeth is it possible she maybe younger than the Vet guessed or did her breeding so young affect her keeping these teeth so long?

Answer
I think this is probably just a rare fluke. I say this because I once had a neighbor who was in his thirties, and he still had ALL of his baby teeth.

Just guessing, I would say that this could be genetic, and the reason for the baby teeth staying in is that there were no adult teeth there to loosen them up and help push them out.