Andy Griffiths and Terry Denton are a creative partnership that began with Just Tricking! in 1997 and now extends to six Just! books and over a million copies sold. Their partnership continued with the award-winning Bad Book, the off-the-wall success of The Cat on the Mat is Flat (which was shortlisted for the CBC Book of the Year for Younger Readers award) and, most recently, What Bumosaur is That? They are now published all over the world including the US, where Andy's Bum books have made The New York Times bestseller lists.