The Octopus Has Three Hearts
An octopus pumps blue blood through three separate hearts — and one of them actually stops beating whenever it swims.
Read moreWelcome to Animals LifeThe Animal Facts Encyclopedia
Animals Life is a free, growing library of the most fascinating facts about the creatures we share this planet with — from the deep ocean to the frozen poles.
Browse hundreds of animal profiles, uncover surprising behaviours, and read our blog on wildlife, conservation and the science of the natural world.
Whether you're a curious student, a proud pet owner, or simply an animal lover, there's always something new to learn here.
Latest Facts
Why Sloths Move So Slowly
A sloth's slowness isn't laziness — it's a finely-tuned survival strategy powered by an extraordinarily slow metabolism.
Read more
Elephants Never Forget
The saying is rooted in truth — elephants recall water sources, routes and individuals across decades.
Read more
Hummingbirds Can Fly Backwards
Hummingbirds are the only birds that can hover in place and fly backwards, beating their wings up to 80 times a second.
Read more
The Axolotl Can Regrow Almost Anything
This smiling Mexican salamander can regrow limbs, organs and even parts of its brain — with no scarring at all.
Read more
How the Arctic Fox Survives the Cold
With the warmest fur of any mammal and a coat that changes colour by season, the Arctic fox thrives at -50°C.
Read more