Herpestidae is a family of mammals in the order Carnivora, composed of the mongooses and the meerkat. A member of this family is called a mongoose or a herpestid. They are widespread primarily throughout Africa and south Asia, and are found primarily in forests, savannas, shrublands, and grasslands, though some species can be found in wetlands or deserts. Most mongooses are 30–60 cm (12–24 in) long, plus a 20–40 cm (8–16 in) tail, though the Ethiopian dwarf mongoose can be as small as 18 cm (7 in) plus a 12 cm (5 in) tail, and the white-tailed mongoose can be up to 104 cm (41 in) plus a 47 cm (14 in) tail. Most species do not have population estimates, though one, the Liberian mongoose, is classified as vulnerable with a population size of around 5,000. No herpestid species have been domesticated.
The 34 species of Herpestidae are split into 14 genera within 2 subfamilies: Herpestinae, comprising 23 extant species that are native to southern Europe, Africa and Asia, and Mungotinae, comprising 11 extant species native to Africa. Extinct species have also been placed into both subfamilies, though some older extinct species have not been categorized into a subfamily. Around ten extinct Herpestidae species have been discovered, though due to ongoing research and discoveries the exact number and categorization is not fixed. Herpestidae is believed to have diverged from the existing Feliformia suborder around 21.8 million years ago in the Early Miocene.[1]