Using your stock geometric shapes, glue them on a white sheet of paper so that was somewhat about the same four-legged animals. And now the kid may think how these strange beasts to turn in their friends.
Give him crayons, markers or paint with a brush, and let him draw specific details that distinguish one animal from another. The goat appears horns and hooves, the horses mane and tail, the cat - whiskers and a tail, not like a horse, etc. Help your child, yourself, too, something to add or.