Bats hang upside down because their body is best adapted upside down.
Its hind limbs rotate 180 degrees so that when they hang, their knees face backwards. And, they only need to let go of the roof to drop into flight. It's also a safe place from predators. Kewpies are little baby dolls based on the illustrations of Rose O'neill. Their clothes were based on what babies wore in the 1950s.