<br /> <p>Cincinnati Zoo and Botanical Gardens’ most popular resident, Fiona the hippo, shows her mother, Bibi, just how tough she is in a video posted to Facebook on March 4.</p><p>Fiona, who recently celebrated her first birthday, can be seen baring her teeth and splashing Bibi in the zoo’s Hippo Cove.</p><p>The clip was viewed over 160,000 times in a day. Credit: Cincinnati Zoo & Botanical Gardens via Storyful</p><br />
