Lots of animals in this book! There is a rhyme in each sentence of the text: I appreciate the author's effort, as I seldom read rhymes so seamless in children's books. In each double-page spread new characters are introduced and a sentence is added to the previous. Reading this aloud must be especially amusing, children will most certainly enjoy that.
This children's picture book is published as an ebook with the title HULLABALOO and as a board book titled DREW AT THE ZOO. Drew is the eponymous donkey which inspires a zoo-ful of hullabaloo among many animal species, to the delight of young ones. There's more text than the very young (preschool and toddlers) will find intriguing. I'd say first to maybe third grade.