Dang, I guess swimming in beaver-infested water is hazardous to one's health. This must have really hurt! But maybe not as much as the ensuing rabies vaccine.....
http://www.nj.com/news/index.ssf/2012/08/rabid_beaver_attacks_man_swimm.html
http://www.nj.com/news/index.ssf/2012/08/rabid_beaver_attacks_man_swimm.html