Cally stands about 7 inches high and walks, dances and mimics human behavior. Callo stands about 9 inches tall, and his face, which is a cell phone display screen, shows human facial expressions when he receives text-messaged emotions. When he receives a smile emoticon, Callo stands on one leg, waves his arms and smiles. If he receives a frown, his shoulders slump and he will cry. If he gets an urgent message, or a really sad one, he'll wave his arms frantically.