interesting facts about hippo that will surprise you number one unique Anatomy hippos are more closely related to whales and dolphins than to other land mammals due to a shared aquatic ancestor number two aggressive behavior known for their aggression hippos cause more human deaths in Africa than any other large animal mainly due to their territorial nature in water number three powerful jaws hippos can open their jaws up to 180° and and their bite force is among the strongest on land with teeth growing up to 20 in long for fighting and dominance thanks for watching And subscribe for my channel for more interesting facts and videos