The axolotl (ack-suh-lah-tuhl) is an amphibian that originates from the ancient lakes of Mexico, hence the nickname "Mexico walking fish". This may look like a fish, catfish even, with its sleek body ...

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.

When a salamander loses a leg, the stump does not simply heal over. Within days, cells at the wound site begin dividing, forming a mound of tissue called a blastema that somehow knows whether to build ...