There are incredible examples of the loyalty dogs have shown to their human and animal friends. Think of Hawkeye, the dog who lay down next to the casket of his Navy SEAL owner in grief. Or Hachiko, the Akita who greeted his owner at the train station every day when he returned home from work, and after the owner suddenly died, returned to the train station at the same time every day for nine years (There's a beautiful movie called Hachi: A Dog's Tale starring Richard Gere about this dog).