A man walks into a pet store and notices a sign that says, "TALKING DOG FOR SALE – $10." Intrigued, he asks the store owner to see the talking dog.
The store owner leads him to the back where a beautiful golden retriever is sitting. The man asks, "Can you really talk?"
The dog looks up and says, "Yes, I can talk. I've always had the ability to communicate with humans."
The man is amazed and asks the dog, "Well, why are you only $10? You should be worth a lot more than that!"
The dog replies, "Well, you see, I used to work for the CIA as a spy dog. I have all sorts of top-secret information that I can't reveal. But now that I'm retired, I just want a quiet life and a loving home."
The man is impressed and decides to take the dog home. As they're walking out of the store, the man turns to the dog and says, "So, what other secrets do you have?"
The dog winks and says, "Well, for starters, I know where all the best fire hydrants are in town!"