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The 20 extant species of Suina are split between the Suidae family, containing 17 extant species belonging to six genera, and the Tayassuidae family, containing three species in three genera. All extant suids are members of the Suinae subfamily; extinct species have also been placed into Suinae as well as other subfamilies. Dozens of extinct ...
The suborder Suina consists of 21 extant species in nine genera. These are split between the Suidae family, containing 18 species belonging to 6 genera, and the Tayassuidae family, containing 3 species in 3 genera. This does not include hybrid species such as boar–pig hybrids or extinct prehistoric species.
Suids have a well-developed sense of hearing, and are vocal animals, communicating with a series of grunts, squeals, and similar sounds. They also have an acute sense of smell. Many species are omnivorous, eating grass, leaves, roots, insects, worms, and even frogs or mice. Other species are more selective and purely herbivorous. [3]
Sus (/ ˈ s uː s /) is the genus of domestic and wild pigs, within the even-toed ungulate family Suidae. Sus include domestic pigs (Sus domesticus) and their ancestor, the common Eurasian wild boar (Sus scrofa), along with various other species.
Suinae is a subfamily of artiodactyl mammals that includes several of the extant members of Suidae and their closest relatives – the domestic pig and related species, such as babirusas. Several extinct species within the Suidae are classified in subfamilies other than Suinae.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
There are currently 1,258 genera, 161 families, 27 orders, and around 5,937 recognized living species of mammal. [1] Mammalian taxonomy is in constant flux as many new species are described and recategorized within their respective genera and families.
Though not all species use a hectocotylus; for example, the adult nautilus releases a spadix. [114] Some male squids, mainly deep-water species, have instead evolved a penis longer than their own body length, the longest penis in any free-living animals. It is assumed these males simply attach a spermatophore anywhere on a female's body. [115]