Close encounter with an Iberian lynx
The Iberian lynx is the most endangered cat in the world.
This cat was once common across the whole of Europe's Iberian Peninsular, but from the 1960s its numbers plummeted, dropping from an estimated 3,000 to approximately 150 individuals in 2005.
Now researchers are desperately trying to bring it back from the brink of extinction. But with so few left in the wild, finding one of the elusive cats is not easy.
Guillermo Lopez from the Lynx Life project takes science reporter Rebecca Morelle to one of the last few isolated spots where the lynx can be found.