The worms absorb and digest symbiotic bacteria through their skin.
New research shows female plains spadefoot toads listen up for the best mate.
When Tasmanian devils flourish, so do the small mammals preyed upon by feral cats.
Snake species recycles poison collected from its own prey.
Fitting transmitters onto thousands of creatures may help scientists predict natural disasters and offer a "lifecast" of hidden environmental information.
Researchers suggest that a previously unidentified factor may drive whales to migrate.
They release "mobile grenades" -- tiny balls of stinging cells that are shaped like popcorn and can swim under their own power.