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狗出汗为什么在舌头上

狗出汗为什么在舌头上

狗狗全身都长有汗腺,但只有脚垫处的汗腺具有排汗散热的作用。狗狗之所以用舌头来散热,并不是汗腺的作用,而是利用唾液蒸发来带走热量。当狗狗感到炎热时就会分泌大量唾液并加快呼吸频率。

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