Submitted by NotSkysAlt t3_yho92s in explainlikeimfive
MsPennyP t1_iuetndh wrote
They don't. They don't even see red, they are partially colorblind. It's the movement of the material of "the cape" in bullfighting that they see and go towards.
kung_fu_ferret t1_iuets4s wrote
Also they use the color red to hide the blood
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