The suborder
Suina (also known as
Suiformes) is a lineage of
omnivorous non-
ruminant artiodactyl mammals that includes the pigs and peccaries of the families
Suidae and
Tayassuidae and their fossil kin.
Hippopotamidae had historically been classified among the Suina for morphological reasons, but is now more often classified as the sister group of the whales, or
Cetacea.