A Guff is a strange creature from Oh the Thinks you can Think! He has a long tail with five fluffy balls attached to him which is held by a man who may be his owner.
The Guff also appears in two Dr. Seuss TV specials: The Hoober-Bloob Highway, where he makes a cameo in one scene where Mr. Hoober-Bloob shows Bub a variety of different animals, and Halloween is Grinch Night, where he was reworked as a Wuzzy Woozoo. In both specials, he has different fur colors (white in the former and pink in the latter), his tail is shorter and has one fluffy ball instead of five.