Hippopotamus
Hippopotamus amphibius
Learn more about Hippopotamus amphibius from the Encyclopedia of Life

Chobe National Park, Botswana
By Lou Coetzer
Johannesburg, South Africa
The hippopotamus can be found in the major rivers
of Botswana—the Chobe, the Kwando-Linaynti, and
the Okanvango—as well as in natural parks and
wildlife refuges. The large, semi-aquatic animal weighs
3,000 to 4,000 pounds and spends most of the day
keeping cool under the water, emerging to forage
on shoreline grasses. Strongly territorial, the hippo
can be found singly or in herds with as many as 30
individuals. Social groups center around the females
and their offspring, while adult bulls aggressively
defend their dominance. Male hippos fight intensely
using their long canine teeth as weapons, and their
hides are often covered with terrible battle scars.
“While traveling in a boat custom-built for photography,
we could really get close to a large gathering of
hippos. Young calves played nearby as the bulls sized
each other up. This particular confrontation between
two males turned violent.” —LC
Nikon D3; 600mm VR ƒ/4 lens at 1000mm; 1.7x tele-extender;
5/10000 sec at ƒ/8; ISO 1000.