Rule 34 Dev - animal_genitalia animal_penis anthro anthrofied balls brown_hair clothing coat cutie_mark dialogue duo equine_genitalia equine_penis erection eyewear freckles fur genitals glasses gloves green_eyes hair handwear horn lab_coat male medial_ring medical_instrument necktie penis red_body red_fur scientific_instrument shirt simple_background sitting stethoscope t-shirt tan_body tan_fur text topwear white_background shallowwin friendship_is_magic hasbro my_little_pony mythology big_macintosh_(mlp) doctor_stable_(mlp) earth_pony equid equine horse mammal mythological_creature mythological_equine pony unicorn 1:1 english_text hi_res|20175472730