Toto is a Cairn Terrier, Brian Griffin is a Labrador, Pluto is an English Pointer, White Fang is a wolf-dog hybrid, Astro was a Great Dane, Cerberus was not technically a dog, more of a monsterous mutt; offspring to Typhon (a dragon headed beast) and Echidna (half woman-half snake), Old Yeller is a Black Mouth Cur, and Triumph is a Rottweiler.
Please allow 'Alsatian' for German Shepherd. It's an old hang up from WW2 that the Brit's still occasionally use when they don't want anything to do with the Germans.
I'm shocked that Baxter didn't make it on this quiz. Or some dog from Harry Potter. Are there any dogs in Harry Potter or is it just owls and rats and hippogriffs? Hey, what about Jacob from Twilight? Does he count? Could also put on Sparky from South Park. Clifford the big red dog. Beethoven. Hachi (famous breed, too). Odie. Bo. Deputy Dawg. Goofy. Huckleberry Hound. Dogbert.