Over a hundred and fifty million years ago – a span of time so big that it's 30,000 times longer than all of recorded human history – giant animals walked the world. These huge beasts were both plant-eaters and meat-eaters, and there was a whole ecosystem with enormous animals in it. In this book, you'll learn all about what made this massive giant great--from what they looked like and ate to where they lived and what they did all day.KidCaps is an imprint of BookCaps; each month we are adding more history books (just for kids!) to our library. Stop by our website to learn more.