anal anal_penetration anthro anus balls biceps big_penis blue_skin body_markings butt claws clenched_teeth cum cum_drip cum_in_ass cum_inside cum_on_butt cum_on_feet cum_on_penis dog-bone doggystyle dripping duo erection fangs from_behind gay glans glowing glowing_eyes godzilla godzilla_(series) green_skin grin gripping hindpaw holding kaiju kneeling leaking male markings muscles nude orgasm paws pecs penetration penis perineum plantigrade precum purple_penis raised_tail saliva scales scalie sex side_view slit smile soles spots tailjob teeth toe_claws tongue tongue_out vein zilla