A professional duck hunter is in the market for a new bird dog. His search ends when he finds a dog that can actually walk on water to retrieve a duck. Shocked by his find, the hunter is sure none of his friends will ever believe him.
First, he decides to try to tell one of his friends, an eternal pessimist who refuses to be impressed by anything.
So, the man invites his friend to hunt with him and his new dog. As they wait by the shore, a few ducks fly by. They shoot, and a duck falls. The dog responds and jumps into the water. But the dog does not sink. Instead, he walks across the water to retrieve the bird, never getting more than his paws wet.
This continues all day long; each time a duck falls, the dog walks across the water to retrieve it.
The pessimist watches carefully, sees everything but does not say a single word.
On the drive home the hunter asks his friend "Did you notice anything unusual about my new dog?"
"I sure did" replies his friend.