Are Rhinoceros of the bovine species?

No, rhinoceroses are not part of the bovine species. While both rhinoceroses and bovines (which include cattle, buffalo, and bison) belong to the order Perissodactyla and Artiodactyla respectively, they are from different families. Rhinoceroses belong to the family Rhinocerotidae, while bovines belong to the family Bovidae. Though they are both large herbivorous mammals, they are distinct in their evolutionary lineage and anatomical features.