FURVERT!

abs animal_genitalia animal_penis anthro anthrofied balls biceps biped black_and_white canid canine canine_genitalia canine_penis canis claws domestic_dog dukey erection fur genitals johnny_test_(series)knot lying male mammal monochrome muscular muscular_anthro muscular_male nude on_back pecs penis pose presenting sheath sketch solo spread_legs spreading tail toe_claws unknown_artist