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問題 · 2026-05-30
牛並非色盲，但屬二色視者，無法清晰辨識紅色，鬥牛行為主要由動作而非顏色驅動。
牛不是完全色盲，而是屬於二色視者，視網膜中只有兩種感光細胞。牛能辨識藍色和黃色，但對紅色的分辨能力極弱——在牛眼中，紅色通常呈現為灰色、黑色或暗褐色[1][2]。這解釋了鬥牛的常見誤解：紅布激怒公牛並非因為顏色本身，而是因為布料的劇烈晃動[2][3]。任何顏色只要快速晃動都會被牛視為威脅。牛的視覺系統演化更傾向於偵測運動和在昏暗光線下觀察，而非精確的色彩辨識[2]。不過研究並非完全一致，有行為測驗推測荷斯登牛可能具有較接近正常的三色型色覺[1]，但最常見的科學結論仍是牛屬二色視者。
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