Egg (biology)

An egg is an offspring of a creature in its embryonic state that gestates within a protective shell until it is fully formed. Creatures such as birds and various types of mammals and reptiles will lay eggs from which their offspring will hatch.

In mainstream Smurfs media, Smurfs tend to be very protective when it comes to eggs of creatures apart from chickens, and Papa Smurf is usually fascinated by the various types of eggs he encounters.