"The Grinny Granny Donkey" is a children's book written by Craig Smith and illustrated by Katz Cowley. It is a follow-up to the popular book "The Wonky Donkey" and features a new character, the Grinny Granny Donkey, who has a contagious smile and a unique laugh. The book follows the Grinny Granny Donkey as she goes on various adventures, meeting new friends and spreading joy wherever she goes. Like "The Wonky Donkey," "The Grinny Granny Donkey" features playful rhymes and humorous illustrations that are sure to delight young readers.