animal_genitalia animal_penis anthro aroused balls big_knot big_penis black_body black_fur blue_body blue_fur blush bodily_fluids brown_eyes canine_genitalia canine_penis chest_spike chest_tuft collar collar_only dripping erection forest forest_background fur genital_fluids genitals grass kneeling knot light looking_at_viewer male nature nature_background navel nude on_all_fours on_ground outdoors outside penis plant precum precum_drip presenting presenting_penis solo spikes spikes_(anatomy) sunlight tan_body tan_fur thick_penis thick_thighs tree tuft anonymous_director generation_4_pokemon lucario pokemon_(species) hi_res