Dino Neighbors

Dino Neighbors

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Read It!Dinosaur Neighbors Cover

The most famous animals of the Mesozoic Era were dinosaurs. But they had LOTS of neighbors.

 

The very first dinosaurs appeared around 240 million years ago, during the Triassic (try-ASS-ik) Period. At first, most dinosaurs were small. Other animals were bigger and tougher than they were!

 

Mammals first appeared during the Age of Dinosaurs. They were very different from dinosaurs. They were covered in fur, and mammal moms fed their babies with milk from their bodies. Almost all of the mammals that lived back then were smaller than house cats. Mammals today come in all shapes and sizes. Tiny mice are mammals. So are giant whales. And so are YOU!