British comedian Ricky Gervais is supporting a worldwide demonstration to save endangered species from extinction.

The Global March for Elephants and Rhinos is due to take place on 4 October (14) to publicise calls for an end to the senseless slaughter of the beasts.

Elephants are killed for their tusks and rhinos are hunted for their horns.

Supporters of the cause are set to march in cities around the world, including London, New York, and Sydney, Australia although the time and location of the events has yet to be decided.

The Office star showed his support by posting a link to the campaign's website on Twitter.com on Wednesday (06Aug14), adding, "For your diary: Global march for elephants & rhinos. Over 100 cities 4th Oct."