Wild dog jumping (image) University of Zurich Share Print E-Mail Caption An African wild dog crosses a small channel in the Okavango Delta in Botswana. Swamps, rivers and lakes, on the other hand, are usually hardly surmountable obstacles. (Image: Dominik Behr) Credit (Image: Dominik Behr) Usage Restrictions None 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.