Similar to the bear vs. tiger vs. gorilla thread. The hippo is the most aggressive and territorial animal on earth, and they can run up to speeds of 35 mph. They're the meanest, most nastiest animals on earth that do not give a fuck. The downfall for an elephant in this battle, is that they can't run, but they can walk up to speeds of 15mph. The elephant can try and penetrate the rhinos and hippos skin with its tusks, but as everyone knows, that's no easy task. Hippos and rhino's have heavily armoured skin, it has been well known that hippos bodies can take a hell of amount of bullets, so when hunted, hunters aim for their face or underbelly. The rhino in my opinion, is at a huge disadvantage, because of its eyesight. When threatened, they charge with full force though. The hippo takes this one easily in my opinion.