The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Female kangaroos have three vaginas.
2
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Jellyfish as a species are actually older than dinosaurs and sharks.
383