axolotl

This term refers to a specific species of salamander characterized by neoteny, meaning it retains juvenile features like external gills into adulthood. It carries a scientific and exotic connotation, frequently appearing in biological research and specialized pet trade contexts.

As a countable noun, it follows standard English pluralization rules. While some biological terms use Latinate plurals, this word typically takes a standard s in common usage to denote multiple individuals of the species.