Puppy Walking - A Journal Story

I am reading a cool school journal book. It is really long because it has many many pages, but it is very, very exciting too. The story I am reading at the moment is called Puppy Walking. It is about a boy and a girl. Their names are Tim and Whitney. They are training a puppy to become a guide dog for a person who is blind. It's a big responsibility. Tim and Whitney are two of the most experienced puppy walkers in New Zealand. Gretchen is their fourth puppy. They have collected photos of other puppies they have trained.