indeed , viktor knew this was his foe , because if leopards were men , this is what they would look like : pale and gaunt , his face had eyes shadowed by dark bags , as if he had n't slept or seen daylight for centuries ; his hair was slicked back , blond with long streaks of silver-gray like a mane ; and his mouth ... his awful mouth opened like he was hissingto reveal four canine cuspids made of gold , longer and sharper than they should be , like a leopard 's fangs .