This is a video of and from a robotic spy hippopotamus baby built by John Downer Productions (previous spy animals) to infiltrate and film a bloat/pod/herd of wild hippopotamuses, including some exciting underwater action. Fascinating! Did you know hippos don’t swim but actually walk/run along the bottom of the water? I did. Well, okay — I didn’t know, I just assumed because they’re so heavy they had no other choice.