Hundreds of years ago, when the Mexica established themselves in what would become the capital of the Aztec Empire, they encountered an alien-looking creature with a permanent grin and a crown of ...

Scientist Dr. Randal Voss gets the occasional reminder that he’s working with a kind of superstar. When he does outreach events with his laboratory, he encounters people who are keen to meet his ...

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Despite their never-ceasing grins, axolotls have been at risk of extinction for years. Over two decades ago, there were about 6,000 of these tiny salamanders for every square kilometer in Lake ...

While Camden's Adventure Aquarium has had the amphibians on display for years, this is the Philadelphia Zoo's first time housing the animals. Axolotls are native to Mexico City and live exclusively in ...

The adorable salamanders are helping scientists investigate a serious question: Could the human body be coaxed to regrow a lost arm or leg? With a silly smile and frilly gills, the axolotl has ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A tiny creature ...

With a silly smile and frilly gills, the axolotl has wriggled its way into the hearts of millions, becoming a popular aquarium pet and pop culture icon in video games, children’s books and toy stores.

A tiny creature with frilly gills, a polite smile and glowing green skin just gave scientists a major clue to solve one of biology’s biggest mysteries: limb regeneration. Aquatic salamanders called ...