Because the chicken hadn't evolved yet.
To get to the Other side
Donald duck.
To get to the other... *sigh*
Still counting. Those darned birds can't seem to cross the road to get over here to screw in the light bulb.
An empty playground
An insect who can find its way around a dark wardrobe !
dinosore
He had a reptile dysfunction.
Any black Pokemon, really.
Computer chips.