Bakajātaka

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 499

[499] Living by the slaughter of other living beings, feeding on flesh and blood, the wolf (vaka), having undertaken a vow (vata), entered upon the Uposatha observance.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.