In Roman mythology, Caca was the sister of the giant Cacus. She was originally a goddess of the hearth, but was later demoted to a minor part in one version of Hercules' Twelve Labors. She told Hercules where the cattle of Geryon were after her brother stole them. Hercules then killed Cacus.

Vesta took Caca's role as goddess of the hearth.


In English slang, the word "caca" has the meaning of excrements or Feces. In French and Spanish it has the same sense with some childish connotation.