ambiguous_gender ankylosaurian being_watched big_penis compsognathid compsognathus dinosaur extinct fat_character fat_fur genitals group group_sex kopidodon_macrognathus larger_male looking_at_another male mammal multiple_characters orgy ornithischian penis reptile rodent scalie sciurid sex sex_work size_difference slit theropod thyreophoran tree_squirrel