Munchkin cats are a relatively new breed, having only been around since the 1980s. They are known for their short legs, which is a result of a genetic mutation. Some people worry that this may make them unhealthy, but there is no evidence to suggest that Munchkin cats are any less healthy than other breeds of cat. In fact, they seem to be just as robust and long-lived as any other domestic cat.
So if you're thinking of getting a Munchkin cat, there's no need to worry about their health - they're just as likely to be healthy and happy as any other kitty!