FURVERT!

4_claws 4_toes animal_genitalia animal_penis anthro anus autofellatio autoknotting balls bent_legs biped book canine_genitalia canine_penis cheek_bulge chest_tuft claws curled_tail domestic_cat erection feet felid feline felis fingers flat_footed fur fur_tuft genitals graphite_(artwork)greyscale hair hands_on_legs hands_on_own_legs hands_on_own_thighs hands_on_thighs head_down hindpaw holding_both_legs holding_both_thighs iris knot knotting male mammal masturbation mismatched_animal_penis mismatched_genitalia mismatched_penis monochrome no_pupils nude open_book oral oral_knotting oral_masturbation oral_penetration paws penetration penile penile_masturbation penile_penetration penis penis_in_mouth plantigrade sheath short_hair signature simple_background sketch small_iris soles solo source_request spread_toes tail toe_claws toes traditional_media_(artwork)tuft unknown_artist unknown_artist_signature white_background