Ten dollars

A guy is driving around the back woods of Montana and he sees a sign
in front of a broken down shanty-style house: 'Talking Dog For Sale'.
He rings the bell and the owner appears and tells him the dog is in
the backyard.
 The guy goes into the backyard and sees a nice looking Labrador
retriever sitting there.
"You talk?" he asks.
"Yep", the Lab replies.
After the guy recovers from his shock, he says, 'So, what's your story?'

The Lab looks thoughtful and says, "Well, I discovered that I could
talk when I was pretty young.  I wanted to help the government, so...
I told the CIA.  In no time at all they had me jetting from country to
country, sitting in rooms with spies and world leaders, because no one
figured a dog would be eavesdropping.  I was one of their most
valuable spies for eight years running.  But you know, the jetting
around really tired me out.  And I wasn't getting any younger so I
decided to settle down.  I signed up for a job at the airport to do
some undercover security, wandering near suspicious characters and
listening in. Actually, I uncovered some incredible dealings and was
awarded a batch of medals."

"Good Lord!  And then what?"
"I got married, had a mess of puppies, and now I'm just retired."

The guy is amazed.  He goes back in and asks the owner what he wants
for the dog.
"Ten dollars", the guy says.
"TEN DOLLARS?! This dog is amazing! Why on earth are you selling him so cheap?"
"Aww, he's such a bullshitter. He's never been out of the yard."

Thanks Randy