Sumatran Tiger (IMAGE) Virginia Tech Caption The availability of adequate understory cover serves as an environmental necessity for tiger habitat, regardless of location. Credit Image courtesy of WWF Usage Restrictions The image may be used with any report or coverage of the study conducted by Virginia Tech and World Wildlife Fund. License Licensed content 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.