Is it common for a perfect bite at 8 weeks (and before) to suddenly go slightly under at exactly 3 months? I have checked it every weeks since he's had teeth!

What are the odds it goes back to perfect??

Bites go off as the puppy grows and it's jaw grows. Don't look at it for awhile.

I have a puppy that had a beautiful bite until 12 weeks then she had an underbite. I mean a bad under bite. She turned 5 months yesterday and it is almost normal again. I would quit looking for awhile.