A man and his dog walk into a bar. The man proclaims, "I'll bet you a round of drinks that my dog can talk."
Bartender: "Yeah! Sure ... go ahead."
Man: "What covers a house?"
Dog: "Roof!"
Man: "How does sandpaper feel?"
Dog: "Rough!"
Man: "Who was the greatest baseball player of all time?"
Dog: "Ruth!"
Man: "Pay up. I told you he could talk."
The bartender, annoyed at this point, throws both of them out the door. Sitting on the sidewalk, the dog looks at the guy and says, "or is the greatest player Mantle?"
1) So they wouldn't hump women's legs at cocktail parties. 2) So they wouldn't stop to play with every other man they see when you take them around the block.