Re: Why do frogs pee on you when you pick them up?

It certainly does!

And that is exactly why a frog does it.

The reason he pees on you when you pick him up is that he wants you to
put him down again.  

This is an excellent example of a defense mechanism.  When the frog
feels threatened, he releases a foul-smelling (and likely foul-tasting)
urine in order to make a hungry predator less inclined to eat him.