Hippopotamus Quiz
The third largest land animal, the hippopotamus is one of the most dangerous, aggressive mammals on Earth. Test your knowledge of these hulking beasts with the hippopotamus quiz.
Question 2 of 11
How much time do hippos spend in the water each day?
... To avoid the glare of the hot sun, hippos spend up to 16 hours a day in rivers or lakes.
Question 3 of 11
What is a hippo's main source of food?
... A hippo consumes about 80 pounds (36 kilograms) of short grasses each night.
Question 4 of 11
How long can hippo tusks grow?
... The long ivory teeth of hippos never stop growing; their canines can grow to be 20 inches (51 centimeters) long.
Question 5 of 11
How wide can hippos open their mouths?
... In a process called gaping, hippos open their mouths an impressive 150 degrees to show off their threatening teeth.
Question 6 of 11
How many species of hippo are there?
... The common hippopotamus and the pygmy hippopotamus are the two species.
Question 7 of 11
Where do hippos live?
... The common hippopotamus and the pygmy hippopotamus are native only to Africa.
Question 8 of 11
Hippo sweat acts as a powerful:
... The oily, mucuslike secretion protects the animal from the sun's harsh rays.
Question 9 of 11
What else might hippo sweat be good for?
... The red pigment in hippo sweat is a powerful antiseptic. The sweat is also believed to be a bug repellent.
Question 10 of 11
How long is the hippo gestation period?
... The gestation period for hippos lasts eight months. Female hippos, called cows, can give birth in the water or on dry land.
Question 11 of 11
Hippos are most closely related to:
... Both molecular evidence and fossil evidence indicate that the closest relative of the hippo is the whale.
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