Speothos is a genus of canid found in Central and South America. The genus includes the living bush dog, Speothos venaticus, and an extinct Pleistocene species, Speothos pacivorus. Unusually, the fossil species was identified and named before the extant species was discovered, with the result that the type species of Speothos is S. pacivorus. S. Pacivorus had a larger overall body size and a double-rooted second lower molar. It has been proposed that Speothos originated in the Brazilian highlands sometime during the Pleistocene.