anal anal_penetration animal_genitalia animal_penis animal_pussy anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro anus backsack balls big_breasts big_penis black_body black_fur breasts brown_body brown_fur butt canine_genitalia canine_pussy collar duo_focus equine_anus equine_genitalia equine_penis female female_penetrated from_behind_position fur genitals group gynomorph gynomorph/female gynomorph_penetrating gynomorph_penetrating_female hair intersex intersex/female intersex_penetrating intersex_penetrating_female interspecies light looking_at_viewer looking_back looking_back_at_viewer narrowed_eyes nipples nude penetration penis presenting presenting_hindquarters public public_nudity public_sex public_transportation pussy raised_tail rear_view sex smile subway_car tan_body tan_fur train tuft vehicle weeml canid canine canis domestic_dog equid equine horse mammal shiba_inu spitz 1:1 colored detailed hi_res lighting shaded
[i]Horseplay on the subway[/i]

I didn't expect this to take so much manual editing, but I love the way it turned out!