Bos in the context of "Even-toed ungulate"

Cattle (Bos taurus) are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus Bos. Mature female cattle are called cows and mature male cattle are bulls. Young female cattle are called heifers, young male cattle are bullocks, and castrated male cattle are known as oxen or steers.

Cattle are commonly raised for meat, for dairy products, and for leather. As draft animals, they pull carts and farm implements. Cattle are considered sacred animals within Hinduism, and it is illegal to kill them in some Indian states. Small breeds such as the miniature Zebu are kept as pets.

Agriculture in West Asia can be traced back to the early Neolithic in the Near East, between 10,000 and 8,000 BC, when a series of domestications by human communities took place, primarily involving a few plants (cereals and legumes) and animals (sheep, goats, bos, and pigs). In these regions, this gradually led to the introduction of agriculture and animal husbandry and their expansion to other parts of the world. The Neolithic is commonly defined as the transition from a "predatory" economy of hunter-gatherers (or "collectors") to a "productive" economy of farmer-breeders, which places the question of plant and animal domestication at the heart of the upheavals brought about by this period.

Farming and livestock breeding appeared in areas of rich biological diversity, where domesticated plants and animals were found in the wild. These regions also contain a large number of food resources in their natural state. Before their domestication, domesticated plants and animals were exploited in the form of gathering and hunting, with the methods and techniques required for domestication already known at the end of the Palaeolithic. Between 9500 and 8500 B.C., "pre-domestic" forms of agriculture were introduced; plants still had a wild character, but their reproduction was controlled by humans. Control of wild animals also began in the same period. These practices gradually led to the emergence of domesticated plant and animal species, which are distinct from the wild forms from which they derive. From a biological point of view, these domesticated species undergo a transition from natural selection to artificial selection by humans. This indicates the conclusion of the domestication process in the period between 8500 BC and 8000 BC. From this point onwards, village communities relied more on the "agro-pastoral" system, combining agriculture and animal husbandry, and less on hunting, fishing, and gathering practices.

Bovidae is the biological family of cloven-hoofed, ruminant mammals that includes cattle, bison, buffalo, antelopes, and goat-antelopes such as sheep and goats. There are 143 extant species and 300 known extinct species of bovids, which are divided into either 11 major subfamilies, or two subfamilies with thirteen tribes. The earliest known bovid had evolved by 20 million years ago, in the early Miocene.

The bovids show great variation in size and colouration of their fur. With exceptions in some domesticated forms, all male bovids have two or more horns, and in many species, females possess horns too. The size and shape of the horns vary greatly, but the basic structure is always one or more pairs of simple, unbranched, bony protrusions of the skull covered in a permanent sheath of keratin, and often with a spiral, twisted, or fluted shape, Most bovids bear 30 to 32 teeth.

Ungulates are members of the diverse clade Euungulata, which primarily consists of large mammals with hooves. Once part of the taxon "Ungulata" along with paenungulates and tubulidentates, as well as several extinct taxa, "Ungulata" has since been determined to be a polyphyletic grouping based on molecular data. As a result, true ungulates had since been reclassified to the newer clade Euungulata in 2001 within the clade Laurasiatheria, while Paenungulata and Tubulidentata had been reclassified to the distant clade Afrotheria. Alternatively, some authors use the name Ungulata to designate the same clade as Euungulata.

Living ungulates are divided into two orders: Perissodactyla including equines, rhinoceroses, and tapirs; and Artiodactyla including cattle, antelope, pigs, giraffes, camels, sheep, deer, and hippopotamuses, among others. Cetaceans such as whales, dolphins, and porpoises are also classified as artiodactyls, although they do not have hooves. Most terrestrial ungulates use the hoofed tips of their toes to support their body weight while standing or moving. Two other orders of ungulates, Notoungulata and Litopterna, both native to South America, became extinct at the end of the Pleistocene, around 12,000 years ago.

Bovines (subfamily Bovinae) comprise a diverse group of 10 genera of medium to large-sized ungulates, including cattle, bison, African buffalo, water buffalos, and the four-horned and spiral-horned antelopes. The members of this group of bovids are classified into loose tribes rather than formal subgroups, as the evolutionary relationships within the groups are still uncertain. General characteristics include cloven hooves and usually at least one of the sexes of a species having true horns. The largest extant bovine is the gaur.

In many countries, bovine milk and meat is used as food by humans. Cattle are kept as livestock almost everywhere except in parts of India and Nepal, where they are considered sacred by most Hindus. Bovines are used as draft animals and as riding animals. Small breeds of domestic bovine, such as the Miniature Zebu, are kept as pets. Bovine leather is durable and flexible and is used to produce a wide range of goods including clothing and bags.

The yak (Bos grunniens), also known as the Tartary ox, grunting ox, hairy cattle, sarlak or sarlyk, or domestic yak, is a species of long-haired domesticated cattle found throughout the Himalayan region, the Tibetan Plateau, Tajikistan, the Pamir Mountains, and as far north as Mongolia and Siberia. It is descended from the wild yak (Bos mutus).