Munchkins are supposed to be very friendly cats, but there is a big controversy over them. THey have short legs because they have a form of dwarfism, which can laster case defects in their bodies. The cats can develop a dip in the spine behind the shoulders and it can cause heart and lung problems. The munckin was not bred to look like that. It was a dwarf cat that was born then reproduced so there would be more cute cats. Some people think it's mean to keep breeding these cats because they do have a deformity and it can later cause problems, but they look cute so people keep breeding them. And please don't think that I think every munchkin cat is unhealthy (if anyone here has one I don't want to offend anyone) this is just what I have read.