Asian needle ants, an invasive species capable of causing life-threatening allergic reactions, have now been detected in at least 21 U.S. states. This species, first found in the U.S. in the 1930s, ...

axolotls are critically endangered. According to the IUCN Red List of Threatened Species, these aquatic monsters—a national symbol that features on Mexico’s 50 peso bills, and which were once ...

One of the world's most endangered amphibians - the strange, perpetually smiling Mexican axolotl - has thrived after being released in artificial wetlands, scientists have discovered. In a study that ...

With their goofy grins and feathery gills, axolotls have become stars of the pet world and video games like Minecraft. But these small, smiling salamanders are also helping scientists explore a ...