The bluehead wrasse uses a "best of both worlds" mating strategy that involves morphing from female to male.
“A surprising amount of death of small vertebrates in the Amazon is likely due to arthropods such as big spiders and centipedes."
They include woodland caribou, lake whitefish, and swift fox.
365 million years ago, this group of teen tetrapods was having a really bad time.
There might be Greenland sharks alive today that were born in Shakespeare's time.