Raised by Wolves?

My youngest is a bit of a wild child. He's the one who has caused me grief by escaping the house (when he wasn't even two yet), he's hid from me in the playroom toybox, in the pantry. He likes to dump the dirt out of my patio planters. He's just one of those always into things kids that keep their Mommies on their toes.

Recently, he's adopted a behavior that has me puzzled. He jumps like a frog. Only instead of saying "ribbit" he's a puppy and his leaps are impressive in both height and distance. I've never seen a kid jump like that.

So, raised by wolves is clearly a joke, but I do wonder about this wild side of his.