FURVERT!

5:4 amixeduppuppy anthro anus aquatic ass_up backsack balls butt cetacean dolphin erection gaping gaping_anus genitals hand_on_butt humanoid_genitalia humanoid_penis looking_back male mammal muscular muscular_anthro muscular_male nude oceanic_dolphin orca penis penis_backwards presenting presenting_hindquarters simple_background smile solo spread_anus spreading toothed_whale