'It looks like size really does matter': Males of four previously unseen tarantula species have record-breakingly long genitalia.
Animals
The 'most remarkable' Jurassic sea monster fossil from Germany belongs to a previously unknown species.
Watch as crabs beat up robot 'Wiggle Dave' after he infiltrates their claw-swinging competition
'Big starfish,' 'little sweet potato' and dozens of previously unseen species recorded during deep-sea expedition off Argentina
Watch as a pod of killer whales pretend to drown one of their own during a terrifying training session
A creepy new giant insect could be the heaviest ever recorded in Australia.
Aye-aye: Strange nocturnal lemurs with long, creepy toes
How do frogs breathe and drink through their skin?
First-of-its-kind footage has captured bizarre sea creatures living at extreme ocean depths.
Watch as 1,000 baby spiders eat their mothers and aunts alive in shocking, first-of-its-kind video.
Mysterious Atlantic barrier separates strange deep-sea jellyfish
Ancient Shark Discovered Deep Inside World's Longest Cave System
Why do cats hate water?
Virginia opossums: American marsupials that have changed little since the time of the dinosaurs.
Science News This Week: Wolves Help Restore Trees in Yellowstone and Largest Interstellar Object Ever Spotted
