Cincinnati Zoo's polar bear #poop bank is world's largest, and there's a good reason behind it https://t.co/YXldh7O8nE https://t.co/zxyMmLCrh7

Cincinnati Zoo's polar bear #poop bank is world's largest, and there's a good reason behind it https://t.co/YXldh7O8nE http://pic.twitter.com/zxyMmLCrh7

— Flush This (@flushthis) November 24, 2017

Follow flushthis on Twitter