Hippopotamuses are not to be taken lightly either, he said.

The only prominent game you won't see here are hippopotamuses.

The lake is known for its population of birds and hippopotamuses.

People were feeding the hippopotamuses by hand to save them, he said.

Some of the hippopotamuses are killed for the food, even though it is illegal (not allowed by law).

Hippopotamuses rest together in the water, but they like to graze by themselves.

Upon doing so hippopotamuses rose from the river and allowed them to cross, saving their lives.

Sometimes 30 hippopotamuses will live in the same place.

Hippopotamuses are gregarious, living in groups of up to 30 animals.

Because of their enormous size, hippopotamuses are difficult to weigh in the wild.

It was continual warfare between the hippopotamuses and the black people.

I'd like to know what kind of dreams those hippopotamuses are having but I can't figure it out."

Even though they are bulky animals, hippopotamuses can run faster than a human on land.

After lunch on the second day, we were invited to take a walk with Pedro to find hippopotamuses at the river.

In life, they would have resembled hippopotamuses with small, elongated heads.

"Good sport," said the Prince, and he ordered out his pack of hippopotamuses at once.

Crocodiles and hippopotamuses account for more deaths than any other animals in the country.

Then, of course, no one expects hippopotamuses to jump.

Crocodiles may be either aggressively displaced or killed by hippopotamuses.

This was because ancient Egyptians saw how protective female hippopotamuses could be about their young.

Now we have oak trees, praying mantises, hippopotamuses, and people.

Hippopotamuses are found in Africa where they require habitats with water deep enough to...

The wildlife here runs from hippopotamuses and crocodiles to lots of birds.

And in the pond you realize those are hippopotamuses floating in the water.

Both crocodiles and hippopotamuses are found in the rivers.

It is one of only two species in the family Hippopotamidae that are still alive.

The hippopotamus is the type genus of the family Hippopotamidae.

Members of Hippopotamidae are sometimes known as hippopotamids.

It is one of only two extant species in the Hippopotamidae family, the other being its much larger cousin the common hippopotamus.

They form the family Hippopotamidae.

Some morphological studies have also identified the hippopotamus family Hippopotamidae among the Suina.

Hexaprotodon is a genus of Hippopotamidae that is sometimes applied to the pygmy hippopotamus.

Family Hippopotamidae: hippos (2 species)

All branches of the anthracotheres, except that which evolved into Hippopotamidae, became extinct during the Pliocene without leaving any descendants.

Archaeopotamus is an extinct genus of Hippopotamidae that lived between 7.5 and 1.8 million years ago in Africa and the Middle East.

The pygmy hippopotamus belongs to a different genus in Hippopotamidae, either Choeropsis or Hexaprotodon.

However, one study suggests that, instead of anthracotheres, another pig-like group of artiodactyls, called palaeochoerids, are the true stem group of Hippopotamidae.

It belongs to the family Hippopotamidae, which also includes the Pygmy Hippopotamus (Choeropsis liberiensis) and a number of extinct genera.

Hippopotamuses are stout, naked-skinned, and amphibious artiodactyl members of the family Hippopotamidae possessing three-chambered stomachs and walking on four toes on each foot.

Some studies have found Andrewsarchus, once considered a Mesonychid to form the sister group to the clade composed of Cetacea and Hippopotamidae along with Entelodontidae.

The Hippopotamidae has historically been classified among the Suina for morphological reasons, but is now more often classified as the sister group of the whales, or Cetacea.

The Hippopotamidae are believed to have evolved in Africa, and while at one point the species spread across Asia and Europe, no hippopotami have ever been discovered in the Americas.

The pygmy hippopotamus is a member of the family Hippopotamidae where it is classified as a member of either the genus Choeropsis ("resembling a hog") or, the genus Hexaprotodon ("six front teeth").

One reason hypothesizes that cetaceans originated about 50 million years ago in south Asia, whereas the family Hippopotamidae is only 15 million years old and the first hippopotamids are only 6 million years old.

This assertion was widely accepted, until Boisserie asserted in 2005 that the pygmy hippopotamus was not a member of Hexaprotodon, after a thorough examination of the phylogeny of Hippopotamidae; he suggested instead that the pygmy hippopotamus was a distinct genus, and returned the animal to Choeropsis.