Below is a link to google images of different Rottweiler Chow mixes:
The Rottweiler is a medium to large size breed of domestic dog that originated in Rottweil, Germany. The dogs were known as "Rottweil butchers' dogs” because they were used to herd livestock and pull carts laden with butchered meat and other products to market. Some records indicate that earlier Rottweilers may have also been used for hunting, although the modern Rottweiler has a relatively low hunting instinct.
The Rottweiler was employed in its traditional roles until the mid-19th century when railroads replaced droving for getting livestock to market. While still used in herding, Rottweilers are now also used in search and rescue, as guide dogs for the blind, as guard or police dogs, and in other roles.
While a Chow is a sturdily built dog, square in profile, with a broad skull and small, triangular, erect ears, rounded at the tips. The breed has a very dense double coat that can be either smooth or rough. The fur is particularly thick around the neck, giving the distinctive ruff or mane appearance. The coat may be one of five colors including red, black, blue, cinnamon/fawn, and cream.
The eyes should be deep set and almond in shape. Chows are distinguished by their unusual blue-black/purple tongue and very straight hind legs, resulting in a rather stilted gait. The bluish color extends to the chow's lips; the chow is the only dog breed with this distinctive bluish appearance in its lips and oral cavity other dogs have black or a piebald pattern skin in their mouths. One other distinctive feature is the curly tail. It has thick hair that lies curled on its back. The nose should be black. The blue-black/purple tongue gene appears to be dominant, as almost all mixed breed dogs that come from a chow retain the tongue color.