What is what animal is kuromi?

Kuromi is a character from the Sanrio company, known for creating popular characters like Hello Kitty and My Melody. Kuromi is a mischievous little girl who is My Melody's rival and often seen wearing a black jester's hat with a pink skull on the front. She is not a specific animal, but is often depicted as a black and white creature with long ears and a tail. Kuromi's personality is described as tomboyish, sassy, and sweet.