2016abstract_backgroundanatomically_correctanatomically_correct_anusanatomically_correct_genitaliaanatomically_correct_penisanatomically_correct_vulvaanimal_genitaliaanimal_penisanimal_vulvaanthroanusbacksackballsbrown_bodybuttclitoral_winkingclitorisclydesdaledraft_horseequidequineequine_anusequine_genitaliaequine_penisequine_vulvaerectionflared_penisgenitalshenry_(laser)hooveshorseintersexlaser_(artist)malehermmammalmedial_ringmuscularmuscular_anthromuscular_intersexmuscular_malehermpenispresentingpresenting_hindquarterspuffy_anussolotailvulva