Baldness A dog is generally entirely covered with hair, while a whale and a hippopotamus each has just a few hairs. A listener wants to know why some of us lose our hair.
Humans have hair everywhere except on our palms and the soles of the feet.
Baldness may be a neutral trait. We're not the only primates who exhibit alopecia. With thanks to The National Science Foundation, we're Block and Byrd for Earth and Sky.