Rule 34 Dev - black_body cutie_mark duo fangs feral fetlocks fur green_hair grey_body grey_fur hair hole_(anatomy) hooves male teeth wings foxenawolf friendship_is_magic goldfur's_cogsverse hasbro my_little_pony mythology whirring_cogs arthropod changeling equid equine mammal mythological_creature mythological_equine pegasus book_cover cover|18381492955