Short-haired Corgis can be bred with long-haired Corgis. However, it is important to note that the result of the breeding may be puppies with long hair, short hair, or hair lengths in between. This is because long-haired and short-haired are recessive genes. If two Corgis are purebred short-haired breeds, their offspring may have short-haired or long-haired. And if one Corgi is a long-haired breed and the other is a short-haired breed, their offspring are more likely to have long hair.

Before deciding to breed, you should ensure that the parent dogs have no genetic diseases and health problems, and accept health examination. In addition, diet and pregnancy monitoring are also important aspects to ensure the health of puppies. Finally, regardless of your puppy's coat length, make sure they receive adequate nutrition and health care.