The bush dog (Speothos venaticus) is a canid that prefers humid forests and grasslands from northern to central South America and has a primitive body form with short legs and a long body. It is nocturnal and primarily hunts small mammals and birds; it can also cooperate in packs (about 10 individuals) to take down prey larger than themselves. It is adapted for swimming and diving, with webbing-like skin between the toes. Reproduction is seasonal, gestation lasts 65–70 days, and the average litter size is four. Populations are declining due to habitat destruction, pathogens, and reduced food resources, and the species is listed as Near Threatened.