Chester Zoo is now home to six pairs of one of the world's rarest lizards - the Bermuda skink.
In what has been described as a "lifeboat" project, researchers hope to develop a captive breeding programme that will ensure the continued survival of the critically endangered population.
Dr Gerardo Garcia, the zoo's curator of lower vertebrates and invertebrates, explains the threats facing these animals and some of the challenges of establishing a successful breeding programme.
