A group of animals belonging to the order Artiodactyla, family Oxidae, and subfamily Oxinae, commonly known as "cattle", with a total of 5 genera. Most of them are large to extremely large herbivorous animals. This includes African buffalo and American bison, as well as yellow cattle, water buffalo, and yaks that are very important to humans. Habitats vary greatly among different species. It can survive in grasslands, savannas, wetlands, tropical rainforests, and temperate forests. Bison are highly social animals. Cattle are herbivorous animals that feed on open grassland habitats. As herbivores, they consume high fiber vegetation, which contains more cellulose and lignin than forest animals.