There are two species of hippos in the world: the common hippo and the pygmy hippo. ¹⁾

They live in areas with lots of water because they spend most of their time underwater to keep their skin cold and moist. ²⁾

Although hippos are in the water for much of their lives, they cannot swim. They walk or stand on surfaces underwater. ³⁾

Hippos can hold their breath for about seven minutes. ⁴⁾

Hippos secrete an oily red substance that acts as a moisturizer, and sunblock, and protects them from germs. ⁵⁾

Hippos can close their nostrils and ears to prevent water from entering. ⁶⁾

The name Hippopotamus comes from the ancient Greek for “river horse.” ⁷⁾

Despite its stocky shape and short legs, it can easily outrun most people. ⁸⁾

Hippos are social animals, residing in groups of usually 10 to 30 members, including both females and males, although some groups have as many as 200 individuals. ⁹⁾

By opening its mouth, the hippo marks its territory and warns others against trespassing. ¹⁰⁾

The hippopotamus lives up to 40 years. ¹¹⁾

The hippopotamus is the third largest land mammal right after the elephant and the white rhinoceros. ¹²⁾

Hippo fossils have even turned up as far north as England. ¹³⁾

Hippos can eat 150 lbs of grass each night. ¹⁴⁾

The hippo is one of the most aggressive creatures in the world and is often considered one of the most dangerous animals in Africa. ¹⁵⁾