Observations:

[moonraker558]

Why do moths fly toward bright lights? Why do our fingers wrinkle when in the bath? Why do pidgeons bob their heads when they walk? Why do Swedish doors open outwards? Why do Flamingoes like to stand on one leg? Why do men go bald and women get hairier? Why do bin men tie stuffed animal toys to the front of their trucks?

[atalanta]

The hairiness thing- it is said that female hormones keep the hair on your head, and male hormones keep the hair on your body. So bald men may have proportionately more male hormones than non-bald men, and hairy women may have an excess of male hormone.
Very heavily hairy women may have a problem with adrenal glands

[Bobbisox]

why do we have Mosquitos, what good are they?