The modern crocodile can breathe while most of its head is submerged because of specialized airway adaptations, which scientists can now trace to the Jurassic period.
Black widow spiders are several species of arachnids in the genus Latrodectus that are known for the females' striking appearance and rumored tendency to eat their mates.
Taiwan is racing to contain an outbreak of invasive cane toads, which likely escaped from a black market breeder.
Authorities at Colombia's airport in Bogotá found and confiscated hundreds of arthropods that German travelers had illegally collected and stashed in a suitcase.
Sailors aboard a gas tanker spotted and filmed a rare encounter with a white sperm whale near Jamaica.
Researchers discovered the fossils of two previously unknown armored marine worms named Excalibur and Shuriken.
A newly identified species of ichthyosaur had big teeth to attack large prey, possibly including other marine reptiles.
Paleontologists in Chile have found the remains of an ankylosaur that represents a new dinosaur lineage.
Haast's eagle may have hunted large prey like an eagle, but its eating habits — targeting the internal organs — were more like those of a vulture.
Some sea creatures have arms, others have tentacles and a few have both. So, what's the difference between these appendages?
A new study claims that a fossil previously believed to be the first known four-legged snake is actually more lizard-like than serpentine.
The U.K. government has included cephalopods and some crustaceans in a new bill that recognizes sentient animals.