FURVERT!

2021 all_fours animal_genitalia animal_penis anthro anus areola backsack balls becoming_erect bernese_mountain_dog biped black_body black_fur blush bodily_fluids border brown_body brown_fur butt butt_grab canid canine canine_genitalia canine_penis canis close-up comic crotch_shot detached_sheath dialogue digital_media_(artwork)domestic_dog duo english_text erection fully_sheathed fur genital_close-up genital_fluids genitals grey_balls grey_body grey_fur hand_on_butt hi_res imminent_anal imminent_sex knot knot_in_sheath lucas_(lucasreturns)male male/male mammal molosser mountain_dog multicolored_body multicolored_fur musclegut muscular musk mythological_canine mythological_creature mythology nipples onomatopoeia penis penis_close-up penis_tip perineum possumpecker precum pubes raised_tail retracted_sheath sheath sheath_play sheath_pull solo_focus sound_effects speech_bubble standing swiss_mountain_dog tail tail_grab text unsheathing urethra werecanid werecanine werecreature werewolf white_balls white_body white_border white_fur wolf