He observed people feeding the ducks that were swimming.
This hungry child decided it would be a good idea to become a duck because he was tired of seeing his parents feed the ducks. He made his way into the water to make sure he wouldn’t be left out of whatever was happening in the lake, even though climbing into it would entail getting wet. All that really happened, though, was that the ducks fled too afraid to stay still.
Unfortunately, no duck food was being handed up to any swimming or hungry canines in the lake that day, and his human parents did not fall for the last-minute, cunning deception.