Rats

http://www.disclose.tv/news/Confirmed_Ratlike_animal_caused_massive_Fukushima_power_outage/92225
Could a rash of mutated animals be next?
http://www.nytimes.com/2013/04/06/world/asia/rat-chase-again-bedevils-fukushima-nuclear-plant.html

http://www.dailymail.co.uk/news/article-2304608/Meltdown-alert-Fukushima-nuclear-reactor-workers-trip-power-cooling-trying-ward-RATS.html

http://enenews.com/nytimes-rat-chase-again-bedevils-fukushima-nuclear-plant-power-lost-to-spent-fuel-pool-for-hours

http://antinuclear.net/2013/04/06/the-rat-risk-again-leads-to-failure-of-fukushima-cooling-system

http://www.fukushimafacts.com/Default.aspx?PID=43

http://paranormal-intersection.blogspot.ca/2013/01/mutations-genetic-anomalies-laboratory.html