Domestic shorthaired cats are characterised by a wide range of colouring and typically 'revert to type' after a few generations, which means they express their coats as a tabby. This can be any color or combination of colors. They also exhibit a wide range of physical characteristics, and as a result, domestic shorthaired cats in different countries tend to look different in body shape and size, as they are working from differing gene pools. DSH cats in Asia tend to have a build similar to Siamese or Tonkanese purebreds, while European and American varieties have a thicker, heavier build.