Africa, south of the Sahara, is home to the richest diversity of animal life on the planet ... Sharing their habitat with some of the most dangerous predators on earth, including lions and ...
The opposite is also true. In the 19th century, European cattle brought rinderpest—a virus that’s nearly always fatal to hoofed animals—to Africa, and it caused buffalo numbers to crash ...
Analysis - Compared with Africa's other big animals, hippos have been relatively neglected in scientific research. Partly, this is because they're hard to study and dangerous to encounter.