Hey everyone. Jacqueline Howard here. Today we’re talkin’ mammals -- but not cute bunnies, scurrying squirrels or precious puppies. I’m talking about their ancestors, who looked like they were on steroids, had ferocious fangs and acted like terminators. Sorry little guy, you gotta sit this one out.
Mammals emerged around 200 million years ago. And fossils from around the world -- including South America, Australia, and Asia -- show us that these prehistoric creatures nursed their young, and had fur or hair just like modern-day mammals.
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