rule 34 1boy animal genitalia anthro balls big muscles canine digitigrade dudebulge front view greyscale invizimals male male only mammal monochrome muscular navel nipples nude pecs pencil artwork penis penis tip sharp teeth sheath signature smile smirk solo spikes teeth traditional media artwork 2140959

Rule34 imageboard 1boy animal genitalia anthro balls big muscles canine digitigrade dudebulge front view greyscale invizimals male male only mammal monochrome muscular navel nipples nude pecs pencil (artwork) penis penis tip sharp teeth sheath signature smile smirk solo spikes teeth traditional media (artwork)