Dogs Gone Crazy for Squirrels, Leaves and Julia Roberts

I have no idea how to describe the sounds coming out of the first dog here. It is seriously strange. It would throw the dog collar translator from "Up" for a loop for sure. Give it a listen!

And this fearsome dog? Freaked out by a leaf.

While this one is terrified of Julia Roberts. Poor thing was probably left alone at home watching Mystic Pizza as a pup, which would make any guy cower in fear.

So what is it about dogs that get freaked out by the strangest things? Do you have a pet that gets unnerved by something unusual?