A giraffe can clean its own ears with its 21-inch tongue.

Well, with such a long tongue, the giraffe has learned to make good use of its tongue by cleaning its ears out. As if this information is not disgusting enough, the giraffe also uses the same tongue to clean his nose! 

Source: https://www.ivoryhearing.com.au/fun-hearing-facts/how-giraffe-clean-its-ears/