Equidae
Equidae (sometimes known as the horse family) is the taxonomic family of horses and related animals, including the extant horses, donkeys, and zebras, and many other species known only from fossils. All extant species are in the genus "Equus". Equidae belongs to the order Perissodactyla, which includes the extant tapirs and rhinoceros, and several extinct families.
Ponginae
Ponginae is a subfamily in the family Hominidae. Once a diverse lineage of Eurasian apes, the subfamily has only one extant genus, "Pongo" (orangutans), which contains three extant species; the Sumatran orangutan ("Pongo abelii"), the Tapanuli orangutan ("Pongo tapanuliensis,") and the Bornean orangutan ("Pongo pygmaeus"). All three species are listed as critically endangered by the International Union for Conservation of Nature (IUCN).