Giant toothbrushes for pygmy hippos at London Zoo

LONDON - JULY 20: Zoo keeper Paul Kybett cleans Nicky the Pygmy hippopotamus's teeth with a new giant (5ft) toothbrush at London Zoo on July 20, 2006 in London England. The Zoo's two hippos, named Nicky and Thug, have a pink and blue toothbrush respectively and to celebrate the arrival of the new toothbrushes, the zoo is holding a half-price entry 'Don't Forget Your Toothbrush Day' on July 23. (Photo by Claire Greenway/Getty Images)