FURVERT!

4_toes american_black_bear animal_genitalia animal_penis anthro balls bear big_balls big_flare big_penis black_bear claws detailed_penis edging equine_genitalia equine_penis erection feet feral flared_penis genitals guide_lines hindpaw huge_flare huge_penis lying magic magic_user male mammal masturbation medial_ring mismatched_animal_penis mismatched_genitalia mismatched_penis on_back pawpads paws penis plantigrade ponie666 sheath simple_background sketch solo toe_claws toes transformation urethra urethral_fossa ursine vein veiny_penis