Penguin

Not to be confused with the pet, Baby Penguin, the Penguin is a passive critter introduced in 1.2. It only spawns in the Ice Biome and may spawn with different colors. The Penguin behaves as the other normal ground critters: it wanders around randomly as a Bunny, Squirrel or Frog would. Penguins can be caught using the Bug Net, they can be carried around in the inventory and released again later. You can also craft them into a Penguin Cage and used as an animated furniture. Once crafted, the penguin cannot be released again.

The Penguin Cage occupies a 6x3 space. The Penguin inside may follow the following patterns randomly:
 * Move from one side to the other of the cage
 * Briefly move its head up and down
 * Blink in its place
 * Look around to the left and right