Blood-engorged Tick (IMAGE) Oregon State University Caption This tick found as a fossil in amber shows two small holes in its back, as if it were just picked off the animal it was feeding on. Credit (Photo by George Poinar, Jr., courtesy of Oregon State University) Usage Restrictions None 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.