A young male will often take a submissive posture, with its head level to the body and its mouth open, when near an adult male. Stallions will bare their teeth as a threat display. A stallion bares its teeth. A stallion exhibits the flehmen response. B. Vocalizations Mothers whinny when separated from their young and nicker to warn them of danger.
Males sometimes nicker to show interest in females.
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