Hippopotamus Hippopotamus
Hippopotamus

Scientific Classification

Common Name
hippopotamus, hippo
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Artiodactyla
Family
Hippopotamidae
Genus Species
Hippopotamus (horse, a river) amphibius (on both sides, living) 

Fast Facts

Description
Huge gray bulky body with a large head. Its facial features somewhat resemble those of a pig.
Size
3.96 to 4.57 m (13 to 15 ft.) long; 1.52 m (5 ft.) high at the shoulder
Weight
1,800 to 3,600 kg (4,000 to 8,000 lbs.)
Diet
Herbivores, prefer short grasses of the African plains
Incubation
8 months
Sexual Maturity
Male: At 7 yrs.
Female: At  yrs.
Life Span
20 to 40 years; 50 years in captivity
Range
West and East Central Africa; extinct in northern and southern parts of original range
Habitat
Rivers and lakes in grasslands; found mainly in large populations on preserves
Population
Global:  No data
Status 
IUCN: Not listed
CITES: Appendix II
USFWS: Not listed

Fun Facts

  1. Hippos were once thought to sweat blood. Actually, hippos secrete a pinkish colored oil that helps them keep their skin moist in the hot African climate.
  2. Hippos spend most of their days in the water or wallowing in the mud, generally coming up on land to feed at night.
  3. Hippos are efficient grazers, their lips are almost 70 cm or about two feet wide.
  4. Baby hippos swim the moment they are born because they are born underwater. And female hippos will actually baby-sit a group of other female's babies.

Ecology and Conservation

Hippos defecate in the water. Their dung provides essential basic elements for the food chain. Tiny microorganisms feed on it and then larger animals feed on those organisms. On land, hippos' large bodies make trails through vegetation that other animals may use for easy access to water holes. Because hippos' favorite food is short grass, they keep these grasses well trimmed which may help to deter grassfires. Hippos are an important part of the African ecosystem.


Bibliography

Brust, Beth W. Zoobooks: Hippos. San Diego: Wildlife Education, Ltd., 1989.

MacDonald, David (ed.). The Encyclopedia of Mammals. Vol. 2. London: George, Allen & Unwin, 1984.

Parker, Sybil P. (ed.). Grzimek's Encyclopedia of Mammals. Vol. 5. New York: McGraw-Hill, 1990.

Redmond, Ian. "Africa's Four-Legged Whale," Wildlife Conservation.Jan.-Feb. 1991, pp. 60-69.