Can German Blackbacks mate with Tibetan Mastiffs? Is it okay to match it?

Black-backed (German Shepherd) and Tibetan Mastiff can mate, and the resulting dogs are called "Hammer-type German Shepherds."

The Hammer German Shepherd is also called:

The Hammer German Shepherd is a dog that is a cross between a German Shepherd and a Tibetan Mastiff. This breed has a dark and shiny face, thick fur, erect ears, almond eyes, strong muscles, sharp claws, and a straight back. The body is strong and strong, all parts are well-proportioned and harmonious, the posture is dignified and beautiful, the physiological function is good, and the reproductive capacity is strong. Because the German Shepherd has a prominent head, big cheeks, big topline, and big bone mass. Therefore, it is commonly known as "Big Head German Shepherd".