Rule 34 Dev - 4_toes anthro anus backsack balls big_muscles butt erection feet fur genitals looking_at_viewer looking_back looking_back_at_viewer male muscular muscular_anthro muscular_male nude paws penis presenting raised_tail smile solo tail tail_anus toes tsaiwolf granite_the_wolf canid canine canis mammal wolf 2013 4:3|1400072765