"A man and his dog walk into a bar" joke

A man and his dog walk into a bar. The man says, "I`ll bet you a round of drinks that my dog can talk."

Bartender: "Yeah! Sure…go ahead."

Man asks the dog, "What covers a house?" Dog says, "Roof!"

Man asks the dog, "How does sandpaper feel?" Dog says, "Rough!"

Man asks the dog, "Who was the greatest baseball player of all time?" Dog says, "Ruth!"

Man says to the bartender, "Pay up. I told you he could talk."

Bartender throws both of them out the door.

Sitting on the sidewalk, the dog looks at the man and says, "Should I have said Gehrig, then?"