Animals Eating (image) Princeton University Caption The researchers set up 36 exclosures — which are designed to keep animals out rather than in — that fell within four types: one type open to all animals; another that excluded elephants; one in which elephants and impalas were excluded; and another off limits to all animals. The researchers used cameras to capture 30,000 hours of foraging activity by elephants (bottom), impalas (top right), small-dog-sized antelopes known as dik-diks (top left), and rodents. The Sodom apple proliferated with each group of animal that was excluded. Credit Photos courtesy of Robert Pringle, Department of Ecology and Evolutionary Biology Usage Restrictions None 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.