A towel animal is a depiction of an animal created by folding small towels. It is conceptually similar to origami, but uses towels rather than paper. Some common towel animals are elephants, snakes, rabbits and swans.
The exact originator of towel animals is unknown, but their popularity is often attributed to Carnival Cruise Lines.
The ancestors of the towel animals are perhaps
the handkerchief animals or the napkins folds.
Carnival, Norwegian Cruise Lines, Disney Cruise Line, Royal Caribbean, and Holland America Line cruises will often place towel animals on a patron's bed as part of their nightly turndown service.
Carnival offers their guests a book (by preordering before your cruise, or onboard ship in the Formalities shop) called "Carnival Towel Creations," published by Navigate Express. The third edition contains an illustrated guide to make nearly 40 different towel animals.