The infant rarely ventures out of its mother's protective pouch until it is 3 years old.
Raises its young in its belly pouch. Won't run from any fight to keep its young protected.
If it is safe, the young gets out of the belly pouch to play. The adult keeps a close eye on the youngster.
To protect its young, it will never give up during battle, no matter how badly wounded it is.
To avoid crushing the baby it carries in its pouch, it always sleeps standing up.
— Pokédex entries (via PokeAPI)