I had one,it wasn't there until she was about 13 weeks,she was seen by a specialist who pulled a few teeth,it didn't correct itself but after careful review with some breeders that had a longer history said to keep her. I bred her once and never had any bite issues show up later. The specialist did not think it was hereditary.

I had one that was just like that at 3 months of age. By the time he was 6 months old, it was perfectly normal. Only time will tell.