THE TIBETAN DOG

Life hasn't been easy for young Tianjing since his mother passed away. Forced to leave the city and move to the grasslands of Tibet where his father is the only doctor for a remote community, Tianjing finds himself becoming even more isolated as he works the lonely job of a shepherd. It's a dangerous task as well. Wolves, packs of wild dogs and other animals prowl the countryside… something that Tianjing discovers all too soon. Fortunately, he also finds a protector and friend in a stray golden mastiff that comes to his aide. When a new menace comes to terrorize the community, both human and canine will have to protect each other. Standing against the savagery of nature and the cruelty of men, this is the story of a boy and his Tibetan Dog. (Source: Maiden Japan) — Description from AniList community (anilist.co).