I’m a scientist, I’m not comfortable with certainty

And since some sharks best live young that are born with teeth- and often stick their head out to have a look outside from Mom‘s womb? There IS a non-zero chance that you could encounter a wee bitey end of one shark at the back end of a bigger one!

I prefer the <100% shark bites that come from the back of the shark called the, “not as frequently bitey end”