The merle Pomeranian is a recent color developed by breeders. It is a combination of a solid base color with lighter blue/grey patch which gives a mottled effect. The most common base colors for the effect are red/brown or black, although it can also appear with other colors. Combinations such as brindle merle or liver merle are not accepted in the breed standard. In addition, the eye, nose and paw pad are marshmallow color, changing parts of the eye to blue and the color on the nose and paw pads to become mottled pink and black.
Pomeranians have a thick, double coat. While grooming is not difficult, breeders recommend that it be done daily to maintain the quality of the coat and because of its thickness and the constant shedding, with trimming every 1–2 months. The outer coat is long, straight, and harsh in texture while the undercoat is soft, thick and short. The coat knots and tangles easily, particularly when the undercoat is being shed, which happens twice a year.