Authors:

Humans are the only animals that have children on purpose with the exception of guppies, who like to eat theirs.

P. J. O'Rourke (2007). “Modern Manners: An Etiquette Book for Rude People”, p.113, Grove/Atlantic, Inc.
Humans are the only animals that have children on purpose with the exception of guppies, who like to eat theirs.