Conservationists say taking a chainsaw to a rhino is necessary to help save the animals

Taking a chainsaw to a rhinoceros sounds drastic, but conservationists say it's necessary to help save the animals.

More than 1000 rhinos are killed every year in South Africa for their horn, which is worth more than cocaine, and corruption's rife among the very people meant to be preventing it, the BBC reports.

There are only about 25,000 rhinos left in the wild.