Rhyta were designed to aerate wine, and were fashioned from a number of materials, including gold, silver, bronze, stone, terracotta and glass (see p. 241 in K. Lapatin, Luxus: The Sumptuous Arts of Greece and Rome). For a related parcel gilt silver bull rhyton see the example in Toledo, a zebu, fig. 7.7 in S. Ebbinghaus, et al., Animal-shaped Vessels from the Ancient World: Feasting with Gods, Heroes, and Kings. According to H.P. Colburn (“Rhyta in the Hellenistic and Roman Mediterranean,” in Ebbinghaus, et al., op. cit., pp. 316-317), the Toledo bull rhyton draws on earlier Achaemenid tradition, since the bull was an important symbol of royal power, representing strength but also fertility and affluence. However, the extended forelegs are a Greek concept, since Achaemenid bulls fold their legs beneath the body. The floral embellishments and the naturalism of the bull protome are also purely Greek in inspiration. The Hellenistic craftsman, working for a Seleucid or Parthian patron, drew from both traditions for this luxury vessel for an aristocratic banquet table.