Harrison Ford and Calista Flockhart took her son Liam to Smithsonian's National Zoo to meet Happy, the zoo's 5,000-pound Nile hippopotamus.
To put the size of the hippo in perspective, that's the equivalent of 50 Calista Flockharts.
And the Giant Hippo
4/8/2009 5:49 PM PDT BY TMZ STAFF
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