Any breed so long as it is a blind person's guide dog.
The most popular breed used as guide dogs is the Labrador Retriever.
The most common guide and police dog breeds are the German Shepard and Labrador retriever.
I would suggest a lab because they are great companions and great guide dogs
No, a dog that is a toy breed has to reproduce with a dog of the same breed. This means that they will produce the same breed of dog. And not a dog out of the toy column.
The new sensational dog breed; the Labradoodle was first developed in the late 1980s by Wally Conran of Guide Dogs. Labradoodles are a new dog breed that is half-Labrador and half-Poodle. Most are known to be fairly large and hyper. --The Dog Expert
No, drifter is not a breed of dog.
The Chihuahua is the smallest breed of dog.
The Burmese mountain dog is a breed of dog it is in the working category
Look at the link below to find out how to breed a dog!
Mixed Breed
There is no way anyone can tell you what breed or mixture of breeds your dog is without seeing pictures. When you take your dog in to be examined by your Veterinarian, ask him or her. Get a dog picture guide and check it out.