Fox by Kunihiko Kasahara, heavily modified

Kasahara published a diagram of a very schematic fox from a square with only head and tail, saying something like "you can add legs if you fold it from a rectangle". So that's what I did. 2x1 rectangle is enough to make four legs. Money bills work too resulting in a longer tail.
That's my absolute go-to model, I can fold it in any condition including full autopilot (if you know what I mean). People like foxes with fluffy tails.