FURVERT!

1:1 animal_genitalia animal_penis animated animated_gif anthro ball_inflation balls_expansion belly big_belly canine_genitalia canine_penis cum_exchange dragon duo erection expansion genital_expansion genitals jasonsmile knot knotting male male/male musclegut muscular mythological_creature mythological_scalie mythology obese overweight overweight_male penetration penile penile_penetration penis penis_in_penis penis_size_difference scalie short_playtime simple_background size_difference urethral urethral_bulge urethral_knotting urethral_penetration urethral_sex