In 1997, Mattel produced a line of plush toys based on The Wubbulous World of Dr. Seuss characters. Among the characters released were small versions of Horton the Elephant, Yertle the Turtle, and Thidwick the Moose. Each plush also came with various Whozits and other characters.
The highlight of the collection was a child-sized Cat in the Hat plush.
A child-sized Horton was featured in Mattel advertising, but it is unknown if he was ever produced.
The Cat in the Hat and Gink
Electronic Rhyme & Surprise Cat in the Hat with the Gink
Horton the Elephant with Whozits
Thidwick with Fox in Socks and Whozit
Yertle the Turtle with Whozit
16" Cat in the Hat
37" Cat in the Hat, which came with a Gink