FURVERT!

3:4 animal_genitalia animal_penis anthro anus backsack balls bed big_butt butt canid canine canine_genitalia canine_penis canis condom derry dobermann domestic_dog erection furniture genitals inviting knot looking_back male mammal nexus penis pinscher sexual_barrier_device solo spread_anus spreading thick_thighs unused_condom wrapped_condom