Some harlequin frogs have lost their poison—and their ability to defend themselves. Scientists are on the case.

With a bulging head that looks like it swallowed a gavel, there's no mistaking the animal: It’s a hammerhead shark. Across the globe, there are more than nine hammerhead species, many of which are ...

Kicking off the channel’s ‘Sharkfest’—and streaming on Disney+ and Hulu—is an entertaining special on the search for the ...

Ambystoma quetzalcoatli is the first fossil salamander to be formally identified in Mexico, revealing that axolotls have ...

Regarding a female argonaut’s translucent shell, National Geographic states: "After mating, it begins secreting calcite from the tips of two of its arms, a continuous process. That forms the delicate, ...

Add Yahoo as a preferred source to see more of our stories on Google. A crossing keeper gestures as a train car featuring an image of the critically endangered axolotl, a salamander native to central ...

Axolotl is cute but endangered salamander native to region Population has collapsed since the 1990s Threatened by habitat loss and contaminated water Critics say axolotl imagery distracts from ...