Replanting the whole forest would be an impossible task.

So cleverly, these trees will be used to create corridors linking up the precious fragments of remaining forest.

The project will give these rare and beautiful tamarins the space they need to survive in the long term.

If on my ark I'm going to have space for creatures that really need a berth to survive, the black-lion tamarin is a very strong candidate.

You've got a ticket.

My next animal is a rather larger beast and with an ancient history.

Rhinos have walked the Earth for over fifty million years, and today they can be found from the savannas of Africa to the forests of Asia.

There are five species of rhinoceros in the world today, and they're all endangered.

Of those five, this is probably in the most trouble.

This is the Sumatran rhino, and there are only about two hundred individuals left.