I'd never heard of this unusual creature until very recently but was immediately captivated by its unique appearance. Although its name means 'Water Dog', and it has also earned the nickname of 'Mexican Walking Fish', it's actually a kind of salamander. Most reach a size of around 20-25cm in length and can be found in a variety of colours including grey, brown, black, and yellow, but I think you'll agree the kind pictured here is the most eye-catching! My dear wife thinks it 'looks like a demon' but it reminds me more of some wacky creature from a Studio Ghibli film or something. Whatever you may think of its looks, though, it may not be around much longer - the entire wild population was confined to two lakes near Mexico City but one of those has now been artificially drained (for the convenience of the humans living there, of course) so the poor old Axolotl now lives only in Lake Xochimilco, itself severely diminished from its former size. Their plight doesn't seem to bother this one though!