A farmer enters a bar..

takes a seat at the counter and orders a beer. After a sip the casual "My dog can speak "b.s. incurs.

Ok, sad the bartender, prove it. Fine, Wolf, get over here and tell this man what do you call the outer most layer of a tree? Bark. What is the part of a building that is on top. Roof. Whe... Lisen here, jakass, we did this 1000 times at least, stop being such a dickhead and just ask a normal question so I can give a straight answer so the proof is easier. Yes, I can speak, there is nothing special about my ability. Yes, other canine don't speak....

Yo, yells the bartender, tell your dog to stop barking.