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.

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

Researchers are studying axolotls -- "small, smiling salamanders" -- in the hopes of learning how humans might one day regrow arms or legs. Photo by Adobe Stock/HealthDay News With their goofy grins ...

Here's everything you need to know about the Mexican axolotl salamander — from organ regeneration and conservation efforts, ...

FREMONT — On the last Sunday of every month, Terra State Community College gets a little slimy as dozens of varieties of reptiles, amphibians, mammals and fish are sold at the BRM Reptile and Exotics ...

(CNN) — 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 ...