Novelist Guy de Maupassant denounced the Eiffel Tower as a “useless and monstrous” structure. He liked to eat his meals in the restaurant at the tower’s base, as it was the only place where he didn’t have to look at it.

Cicadas have their hearing organs in their stomaches, at the base of the abdomen. Crickets have their hearing organs in their knees, or, more precisely, in the oval stilts of their forelegs.

Cheetah cubs have long tall hair that runs from their neck all the way down to the base of their tail, which is called the mantle. The mantle makes a cheetah cub look like a honey badger and makes them blend into tall grass, which helps keep them safe from threats like lions and hyenas.