When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Hannah Osborne is the planet Earth and animals editor at Live Science. Prior to Live Science, she ...

Are you ready to test your knowledge of the animal kingdom? This quiz goes beyond the basics, challenging you with unique questions (MCQs) about some of the most fascinating creatures on Earth. From ...

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 ...