The Mammut Bulldog may be a recreation of the first long-haired working bulldog of the 1800s. The American Bulldog, Bandoge, bulldog, Olde English Bulldogge, and Bullmastiff were used to create the fashionable Mammut.
The wedge-shaped head is medium long with a pronounced muzzle. It's got a broad skull and pronounced cheek bones.
The ears are set high. All ear types are allowed. The nose is black, brown, or liver-colored, depending on the pigment.
The oval eyes are dark. The muzzle is square, wide, and deep, with a robust appearance and adjusted fléaux. It's an undershot or scissors bite and isn't blamed for broken teeth.
The neck is muscular, slightly arched from the shoulder to the top, tapering and free from loose skin at the throat. The chest is deep with closed ribs.
The thighs are medium in size with well-developed muscles, joints with proper angulation (about 30 degrees), and they stand parallel. The joints are rather steep, but not too so.
The rear is robust, with a rather sloping croup and a small depression behind the withers. The tail is about low, getting to the hocks, and is allowed in all forms, but a straight, intact tail without kinks is preferred.
Kinked or deformed tails are docked, but the breed isn't altered in any other way (no ear cropping or dewclaw removal).
The longhaired coat is thick and sometimes appears as feathering around the ears, back of the legs, and tail. All coat colors are allowed, but pure white dogs are excluded from breeding.