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A new quiz will test your knowledge of the animal kingdom - and it's a lot harder than you might think. Dare to take a stroll on the wild side with this challenging quiz, testing your knowledge of ...

Is This Clothing, Food, or an Endangered Species? Take Our Quiz. Is “vaquita” the name of an endangered species, a clothing brand, or a type of food? How about “saola”? If you answered “endangered ...

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We don't know exactly when the first animals on Earth appeared, but it's thought to be around 700 million years ago. Around 541 million years ago, at the start of the Cambrian period, hundreds of ...