Theriodictis

Theriodictis is an extinct genus of small hypercarnivorous fox-like canid endemic to South America during the Pleistocene, living from 1.2 Ma- 500,000 years ago and existing for approximately .
Prey is thought to have included ungulate camelids (e.g. guanaco), cervids (e.g. "Epieurycerus" and "Antifer"), equids (e.g. "Equus" and "Hippidion"), peccaries (e.g. "Catagonus"), giant rodents (e.g. "Neochoerus"), mesotherids (e.g. the burrowing "Mesotherium"), and giant cingulates (e.g. "Eutatus", "Propraopus" and "Pampatherium").
Fossil distribution.
The fossil remains are confined to the Tarija Formation of Bolivia, the Chui Formation of southern Brazil, and the Yupoí Formation of northern Argentina. The species "T. tarijense" was transferred to the genus "Protocyon" upon phylogenetic analysis.