Book 33, Question 22 · Video
What were the first mammals like?
The first mammals lived more than 200 million years ago. They were small, like shrews or mice, and many were active at night. They hid in burrows or under logs. They lived at the same time as the dinosaurs. Their bones show fur, three ear bones, and a way to nurse babies. They were the beginning of a big family.
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What Crafty Clover says in this video
Intro
Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. What were the first mammals like?
The Big Idea
The first mammals lived with dinosaurs! They were small and sneaky. What were they like?
Long Ago
Step one: Long Ago. The first mammals lived more than 200 million years ago. They were small, like shrews or mice.
Night Creatures
Step two: Night Creatures. Many were active at night. They hid in burrows or under logs while dinosaurs roamed, and came out in the dark to hunt insects.
Fossil Clues
Step three: Fossil Clues. Their fossils show three ear bones, and rare fossils even show traces of fur. They were the beginning of a big family.
A Closer Look
Let's take a closer look! Mouse-sized. Night. Burrows. Ear bones.
Quick Facts
Quick facts! Early mammals were probably as small as mice. They lived with dinosaurs. Many came out at night. Rare fossils show traces of fur.
Think Like a Scientist
Now, think like a scientist! Draw a tiny early mammal sleeping in a burrow during the day. Draw a dinosaur outside. Then draw it at night. Add a crescent moon. Show it coming out to look for food.
Outro
The first mammals lived over 200 million years ago with the dinosaurs. They were small, like mice, and many came out at night. Their fossils show three ear bones, and rare fossils even show traces of fur. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!