Scat-Detecting Dog, Researchers Trail Whales (image) University of Washington Share Print E-Mail Caption Researchers trail behind whales waiting for Tucker to indicate by leaning over the bow that he can smell whale poop. The boat on average stays between 450 yards to more than half a mile away from whales. Credit Fred Felleman Usage Restrictions Credit required Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.