A duck hunter needed a new bird dog, so he found a dog that could actually walk on water to retrieve the duck. Shocked by his find, he was sure none of his friends would ever believe him.
He decided to try to break the news to a friend of his, a true pessimist and invited him to hunt with him and his new dog. As they waited by the shore, a flock of ducks flew by. They fired, and a duck fell. The dog responded and jumped into the water. The dog, however, did not sink but instead walked across the water to retrieve the bird, never getting more than his paws wet.
The friend saw everything but didn't say a single word. On the drive home the hunter asked his friend, "Did you notice anything funny about my new dog?" "I sure did," responded his friend. "He can't swim!"