PBS's Nature has a good episode on beavers. Worth checking out: http://www.pbs.org/wnet/nature/leave-it-to-beavers-leave-it-to-beavers/8836/ http://www.pbs.org

PBS's Nature has a good episode on beavers. Worth checking out: http://www.pbs.org/wnet/nature/leave-it-to-beavers-leave-it-to-beavers/8836/ http://www.pbs.org/wnet/nature/leave-it-to-beavers-leave-it-...