Can German shepherd dogs and Tibetan mastiffs cross? Thank you, and God bless you.

Can't! ! Tibetan Mastiff: I like it very much because of its most complicated personal feelings, long history, mysterious legend, rare, wild and noble temperament. It is one of the rare large fierce dogs in China. But now Tibetan mastiffs are mostly owned as pets or breeding dogs or even research institutes, and their ability as guard dogs has not been brought into play. Its reputation in the field of guard dogs is not as loud as Rottweiler, and impure Tibetan mastiffs are often defeated as fighting dogs. Even killed, he even turned around and ran away after playing 15 minutes (Rowena Dadan had a similar situation against Bite). Before 10 minutes, he seemed to bite, but after a while, he turned and ran away. It is said that he was afraid of biting his indomitable spirit, or he couldn't beat the bite from the momentum, so he chose to run away. In terms of national feelings, he can't accept it, really.