You might know axolotls from video games like “Minecraft” and “Pokemon,” but the aquatic salamanders with unique, adorable ...

Most axolotls in the wild are a mix of brown, black, gray, and green, a coloring known as “wild type.” Axolotl gills are often depicted with vibrant colors, but that’s not always the case.

It is dwindling in the wild because of serious threats to its natural habitat. For decades, researchers have marvelled at how the axolotl can regenerate amputated limbs, damaged body tissue ...