Characteristics

The term Squitten is generally used to refer to cats with the condition Radial Hypoplasia (under-developed radius bones) or Foreleg Micromelia (small forelegs) and related conditions known as Radial Aplasia (absent radius bones), Radial Agenesis (failure of radius bones to form) that produces stunted forelegs. The mutation sometimes occurs in the random-breeding population, particularly in inbred populations where recessive genes may be exhibited. Such cats have also been called Twisty Cats and several were deliberately bred by Karma Farms resulting in public outcry against the breeder.
Source : http://en.wikipedia.org/wiki/Squitten