To be precise, all Munchkin cats have short legs. The reason why long-legged Munchkin cats appear is because the short-legged Munchkin cats were combined with long-legged cats during mating. Such long-legged cats are hybrids. Variety. Short-legged Munchkin cats need to be combined with long-legged British Shorthair cats, American Shorthair cats or domestic cats when they are in heat, so that cats with different looks can be produced.