Our passion for these cute-looking salamanders means they are everywhere – except in the wild, where the species is under increasing threat

Axolotls are the new llamas. Which were, of course, the new unicorns. Which triggered a moment for narwhals. If you are an unusual-looking animal, this is your time. Even humans who have never seen an axolotl – a type of salamander – in the smooth and slimy flesh will have met a cartoon or cuddly one. Mexican axolotls have the kind of look that is made for commercial reproduction. The most popular domestic species is pink. Some glow in the dark – and their smile is bigger than Walter’s in the Muppets.

At Argos or Kmart, you can buy axolotls as cuddly toys, featured on socks, hoodies and bedding, or moulded into nightlights. You can crochet an axolotl, stick a rubber one on the end of your pencil or wear them on your underpants. The Economist says they’re a “global megastar”. More than 1,000 axolotl-themed products are listed on Walmart’s website. They grace US Girl Scouts patches, McDonald’s Happy Meals, and the 50-peso bill, a design so popular that, last year, the Bank of Mexico reported that 12.9 million people were hoarding the notes.