Kingdom is an epic six-part series narrated by Sir David Attenborough which follows four rival animal families over five ...

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 ...

We don't know exactly when the first animals on Earth appeared, but it's thought to be around 700 million years ago. Around ...