Although modern dog breeds are a nineteenth-century invention, the Greeks and Romans had a few favorite flavors of canine companion.
Further Reading
Iain Ferris, Cave Canem: Animals and Roman Society (Amberley, 2018)
Kenneth Kitchell, Animals in the Ancient World from A to Z (New York, 2014)
J. M. C. Toynbee, Animals in Roman Life and Art (London, 1973)