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A man walks into a bar and notices a poker game at the far table.
Upon taking a closer look he sees a dog sitting at the table. This
piques his curiosity and he walks closer and sees cards and chips
in front of the dog.

Then the next hand is dealt and cards are dealt to the dog. Then
the dog then acts in turn with all the other players, calling, raising,
discarding - everything the other human players were doing.

However, none of the other players seemed to pay any mind to the
fact that they were playing with a dog, they just treated him like
any other player.

Finally the man could no longer remain silent, so between hands he
quietly said to one of the players, "I can't believe that dog is playing
poker, he must be the smartest dog in the world!"

The player smiled and said, "He isn't that smart. Every time he gets
a good hand, he wags his tail."
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