Audio Slideshow: The Parasites of Beaver Pond Tom Raffel of Penn State's Center for Infectious Disease Dynamics takes writer Brendan Borrell on a trip to Beaver Pond where the parasites are jumping. Please download the Adobe Flash Player to view this content: Advertisement   Rate this article Currently 1.67/5 1 2 3 4 5 Rating: 1.67/5 (3 votes ) Comment on this article