Rule 34 Dev - abs animal_genitalia animal_penis anthro armband athletic bald_crotch balls biceps big_muscles biped black_hair black_nose blush canine_genitalia canine_penis chest_tuft claws clothing collar fangs flaccid flexing fur genitals grey_body grey_fur grey_pawpads grin hair kerchief leaning looking_at_viewer male muscular muscular_anthro muscular_male nipples nude pawpads paws pecs penis pose purple_eyes sheath simple_background smile solo standing teeth toe_claws tuft white_background patto peable bull_terrier canid canine canis domestic_dog hunting_dog mammal terrier 2:3 hi_res|1480482815