Hippopotamuses are on 5 different episodes, and are #2 on Biters, #8 on Stinkers, #8 on Gross Outs, #4 on Big Mouths, and #5 on Divers. They are one of the deadliest large land mammals. They kill about 200 people every year. They can open their mouth 150 degrees, over a meter wide, and can bite a crocodile in half. They can also hold their breath underwater for 5 minutes. However, they also have a gross habit of flinging their poo with their tails, so other hippos invading their territory will back off.
- If following the countdown of extreme Biters, here is a link to the final contender.
- If following the countdown of extreme Stinkers, here is a link to the next contender, which has bad breath that will blow you away.
- If following the countdown of extreme Gross Outs, here is a link to the next contender, which has a truly nauseating way of bringing home the bacon.
- If following the countdown of extreme Big Mouths, here is a link to the next contender, which takes you into the belly of the beast.
- If following the countdown of extreme Divers, here is a link to the next contender, which has to dive to find food even entering the coldest seas on the planet to do so.