Why isn't probing an exact science?

[sho220]

So what is the deal? Does it mean that someone previously probed them too hard breaking thru the wall? I honestly find that hard to believe on three different snakes. Plus I thought I read somewhere that if that ever happened it damaged them and they wouldn't be able to breed?

That was my first thought. It may just be naturally occuring physiological differences. <<< I just made that up so it's probably not correct.

This is why I don't trust probing.