Definition: The word "moo-dog" comes from a Korean name, meaning "little dog." It's used to describe a type of cat that's typically smaller than a normal dachshund (German shepherd) but has shorter fur and bigger eyes. Definition: "Moondog," as it's often used in the context of cats with short hair that can be mispronounced as "moo-dog," is an affectionate nickname for a specific breed of cat from Korea, particularly dogs like the Korean dachshund. While they may not have fur quite like a standard dachshund and come in different colors, their small size and striking appearance make them a favorite among many dog owners around the world.