Book excerpt: If you can draw a simple circle, square, rectangle, or triangle, you can draw any of the more than 100 cartoon animals in this fun and colorful book by Christopher Hart, the world's bestselling author of how-to-draw books. In this follow-up to the popular book Drawing Shape by Shape, kids and adults alike will learn how to draw a wide variety of animals, from common dogs and cats to safari animals, sea creatures, birds, bugs, reptiles, dinosaurs and much more. With step-by-step instructions and a colorful collection of cartoon creatures, drawing animals is as easy as it is fun