Egg

An Egg on Club Penguin is a pookie, uppie and (rarely) a kitty as an egg. They go to the Pet Shop and normally say "Free Egg!". If a mumu decides to adopt it, she will 'warm' it until it hatches. If the egg does not get adopted soon, it might 'crack and hatch'. Then the egg becomes a kitty, uppie, or a pookie.

Appearence
Eggs are penguins in the color Arctic White, and nomally just wear a white Ninja Belt, or just the ghost costume without anything else. Rarely, eggs will have the mummy costume on or a hat. After they hatch, they may be wearing clothing and/or the color yellow.

Trivia

 * Sometimes, instead of eggs, Pookies will be born, like a human would be. These pookies are called "tummy" (or rarely "tum tum") pookies.
 * On Club Penguin, mermaid and dragon eggs are also found. However, they are rarely ever seen.