![3girls bbchu between_breasts black-framed_eyewear blonde_hair blush breasts brown_hair cleavage comic commentary commission crossover crying crying_with_eyes_open dark_elf dark_skin detached_sleeves earrings elf english_commentary fillia_einhart final_fantasy final_fantasy_xiv flehmen_response food food_on_face glasses gloves green_eyes hamster highres huge_breasts jewelry kenshin187 left-to-right_manga lily_(bbc-chan) lipstick makeup mascot medium_breasts meme mole mole_on_breast mole_under_mouth motion_blur multiple_girls original pink_hair pointing pointy_ears purple-framed_eyewear purple_lipstick roegadyn semi-rimless_eyewear short_hair silent_comic soothing_ruby tears under-rim_eyewear white_gloves woman_yelling_at_cat rating:s score:20 3girls bbchu between_breasts black-framed_eyewear blonde_hair blush breasts brown_hair cleavage comic commentary commission crossover crying crying_with_eyes_open dark_elf dark_skin detached_sleeves earrings elf english_commentary fillia_einhart final_fantasy final_fantasy_xiv flehmen_response food food_on_face glasses gloves green_eyes hamster highres huge_breasts jewelry kenshin187 left-to-right_manga lily_(bbc-chan) lipstick makeup mascot medium_breasts meme mole mole_on_breast mole_under_mouth motion_blur multiple_girls original pink_hair pointing pointy_ears purple-framed_eyewear purple_lipstick roegadyn semi-rimless_eyewear short_hair silent_comic soothing_ruby tears under-rim_eyewear white_gloves woman_yelling_at_cat](/cdn_image/preview/e4/93/e493be51ef60a6aefaf12873753dee61.jpg)
flehmen response
"The Flehmen response is a behavior in which an animal curls back its upper lip exposing its front teeth, inhales with the nostrils usually closed, and then often holds this position for several seconds."
"The behavior facilitates the transfer of pheromones and other scents into the vomeronasal organ (VNO, or Jacobson's organ) located above the roof of the mouth via a duct which exits just behind the front teeth of the animal."
(from Wikipedia)