Why do armadillos have shells? Why are sloths slow?
But Why: A Podcast for Curious Kids
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Convergent Evolution - What Is the Fastest Speed That Sloths Can Go on Land?
Two-fingered sloths are known for being extremely aggressive, while three-fingered ones are a lot more mellow. They have different colored hair, different features on their face and the way they climb through the trees is differently. When they're afraid, when they don't move at all it could mean that they're scared. The other thing too is they move slowly, of course, but they can definitely move faster than what you might normally see.
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