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.
The World Cup football tournament kicks off in one week, and host South Africa is busy putting on the finishing touches. But not everyone is looking forward to the tournament. Authorites in cities including Cape Town are being accused of clearing the poor from the streets - to create a good impression for visiting fans. Al Jazeera's Haru Mutasa has more.