in charles darwin's journals from the voyage of the beagle, he describes various species of lizards he encounters on the galapagos. he observes one species digging its burrow, and remarks that rather than scratching alternately with its two forelegs, it scratches with the hind and foreleg from the SAME side, switching to the two legs on the opposite side when it tires.
fatality:
That's a rather ridiculous image, and I wonder whether that is because of blatant inefficiency or our lack of exposure.