In Greek mythology, King Lyncus (Greek: Λύγκος, pronounced [ˈlyŋkos]) of the Scythians was taught the arts of agriculture by Triptolemus but he refused to teach it to his people and then tried to kill Triptolemus.
Demeter turned him into a lynx as punishment.
[1] The myth is not known from any extant Greek sources, but it is found in Ovid's Metamorphoses 5.648-661
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