A pair of lions

Keaton can't talk and barely moves. Quinn never stops talking and can't sit still.

Yet somehow, the Cap'n and Skipper have developed a mutual form of communication. Call it guttural. Call it primal. Call it a growl, because that's what it is.

These brothers are enjoying playing the role of dinosaurs, roaming treacherous landscape within Keaton's 6-foot-wide radius of movement. Or they're pirates, traversing the ocean in search of burying treasure at the bottom of the toy box.

Decide for yourself. Here's some photographic evidence.