FURVERT!

1:1 2012 abs animal_genitalia anthro anus aquatic armaggon_(tmnt)balls biceps big_muscles biped black_penis claws dieseldoberman erection fin fish genitals grey_body grey_skin looking_at_viewer lying male muscular muscular_anthro muscular_male nipples nude on_back pecs penis pose presenting raised_leg red_eyes ridges shark sheath simple_background solo spread_legs spreading swimming_fins teenage_mutant_ninja_turtles