Nothing Makes This Dog Madder than ... a Leaf

This looks like a big ol' tough dog, the kind of dog you wouldn't want to mess with. But you know who's not afraid of that dog? The little leaf that lands in front of a window in the family's sun room.

The dog's owner, Senyin, writes on YouTube: "My boxer, Leonardo, was barking. Went to go look and found out he was scared by a leaf."

Leaves. You can't trust 'em!