In South Africa, there are 18,000 elephants spread out over 80 game parks.
But as the population continues to grow, they're leaving chaos in their wake - land is being destroyed and there's growing tension with local communities.
Haru Mutasa has been to Limpopo Province, where they're using contraception to stop a different kind of population explosion.
Interview with Newton Kanhema of the Zimbabwe Independence Assistance Network talks about Zimbabwe's Prime Minister Morgan Tsvangirai's U.S. visit.