- Hippopotamuses are found in Africa. 
- The name hippopotamus means ‘river horse’ and is often shortened to hippo. 
- The hippopotamus is generally considered the third largest land mammal (after the White rhinoceros and elephant). 
- Hippopotamuses spend a large amount of time in water such as rivers, lakes and swamps. 
- Resting in water helps keep hippopotamuses temperature down. 
- Hippopotamuses give birth in water. 
- Hippopotamuses have short legs, a huge mouth and a body shaped like a barrel. 
- The closest relations of the hippopotamus are surprisingly cetaceans such as whales and dolphins. 
- Scientists believe this family of animals diverged in evolution around 55 million years ago. 
- Although hippos might look a little chubby, they can easily outrun a human. 
- Hippos can be extremely aggressive, especially if they feel threatened. 
- They are regarded as one of the most dangerous animals in Africa. 
- Hippos are threatened by habitat loss and poachers who hunt them for their meat and teeth. 
- A male hippopotamus is called a ‘bull’. 
- A female hippopotamus is called a ‘cow’. 
- A baby hippo is called a ‘calf’. 
- A group of hippos in known as a ‘herd’, ‘pod’, ‘dale’ or ‘bloat’. 
- Hippos typically live for around 45 years. 
- Hippos eat mostly grass.