all babies born with green butts have African blood mixed in their blood
some fish lick there butts
Babies have butts because they are born with them.
yes all dog females have babies out of there bedongkidongks
many were babies, they would get taken from their mothers and then they are slaves, they would work their butts off.
Because they are brand new.
Because it's more comfortable than sleeping with their head in the air. 
they can have 111111111111111 babies
Because babys butts are softer than anything! Ecspeacially to A NEW MOM!
Some people do. It must depend on whether their butts get exposed to sun.
butts
Some people like big butts because we are all different and have varying tastes. Liking big butts is really no different to liking small butts, or curly hair, or long legs. It's just personal taste.
nothing they eat themselves and us even our butts