The Histories · 2.74

There are also about Thebes sacred serpents, not at all harmful to men, which are small in size and have two horns growing from the top of the head: these they bury when they die in the temple of Zeus, for to this god they say that they are sacred.

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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