This apparently is the Taurus symbol, I'd never heard of it before myself, but someone wanted a tattoo based on it, so before I could make the graphic they wanted, I had to re-create this symbol.
Bull Tattoo Art | 50 Taurus Tattoos
Click here for 50 awesome bull and Taurus tattoo designs you won't find on any other website + an overview of the meaning of bulls across different cultures...
tribal Swirly by Milo-Wildcat on DeviantArt
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Abstract Simple Bull Head Vector Logo Stock Vector - Illustration of market, horns: 129850794
Illustration about Abstract simple Bull head vector logo concept illustration, Buffalo head logo, Bull head logo. Illustration of market, horns, aggressive - 129850794