Black dog names, pulled from lots of various generic 'net lists:
Adrian (Latin: "dark haired"; reminds of black-haired Adrian Paul, major babe.)
Ash
Ashes
Anise (flavoring used to make licorice candy)
Bear
Beluga (famous Russian caviar)
BlackJack
Bruno (Teutonic for "dark")
Carbon
Caviar
Chaos
Charcoal
Coal
Coffee
Cola
Diesel
Domino (only if has a white spot or two)
Eclipse
Eightball (black billiard ball w/ a white spot)
Ember
Espresso
Galaxy
Hershey
:shrug:: they make dark chocolate)
Inky
Jet
Kahlua (coffee-flavored liquer)
Licorice
Magic
Midnight
Ninja
Nitro
Onyx
Othello
(dark-skinned main character from Shakespeare's Othello, Moor of Venice)
Ouiji (as in Ouiji board ... pronounced "wee-gee")
Panther
Pantera (Latin for "panther"; also a heavy metal band)
Pepper
Pepsi
Phantom
Pirate
Pitch
Raven
Retread (if you always get black dogs)
Rook (a chess piece)
Salem
Shade
Shadow
Shady
Sirius (the dog star, i.e. Alpha Canis Majoris)
Soot
Smoky
Spell
Spooky
Storm
Tarmac
Twilight
(but might make people think you like the stupid teen-angst "Twilight")
Vader
Vesper (the evening star)
Voodoo
Warlock
Wizard
Zeppelin (Led Zeppelin wrote a song called "Black Dog")