FURVERT!

abs animal_genitalia animal_penis anthro balls biceps big_penis biped canid canine canine_genitalia canine_penis canis domestic_dog erection fur genitals great_dane harlem_(character)kneeling knot looking_at_viewer male mammal markings mastiff molosser muscular muscular_anthro muscular_male nipples nude obliques pecs penis pose presenting sheath sketch solo spots spread_legs spreading tail triceps tush_(artist)vein