An animal hat is a novelty hat made to resemble an animal or other character. [1] It is often similar to a beanie, with facial features, added ears and sometimes details such as whiskers, although versions made from fake fur are also known by this name. [1] While they were known before 2010, [2] animal hats became an American fashion trend in the winter of 2010-11. [1] Despite ongoing criticism, including the animal hat being listed as a 2012 fashion faux pas despite also being a "serious fashion statement," they stayed popular into 2013. [3] [4] Books dedicated exclusively to knitting and crocheting various styles of animal hats have been published. [5] [6]