Discusses and gives examples of the size and weight of various animals and parts of animals. How big is a crocodile? What about a tiger or the world's largest spider? Can you imagine a tongue that is two feet long or an eye that's bigger than your head? Sometimes facts and figures don't tell the whole story. Sometimes you need to see things for yourself at their actual size. Teaching Books: https://school.teachingbooks.net/tb.cgi?tid=71.