Viral videos showing Zimbabweans crossing the crocodile-infested Limpopo have left South Africans concerned about how easily foreigners enter the country.

The tourist killed by elephant at Kruger National Park in South Africa was "charged and trampled", park officials say.

Like any other large crocodilian, they can be dangerous to humans, especially if we feed them, but they tend not to be as aggressive as Asian and African crocodiles and by nature avoid humans.