Sisters act: Meet the nuns helping to save one of the world's rarest amphibians – video

A community of Mexican nuns have formed an unlikely partnership with British conservationists to save an endangered amphibian species. Achoques once thrived in Pátzcuaro, Mexico’s third largest lake, but they are now close to extinction due to introduced fish species and deforestation.  The nuns, who use the lizard-like animal to create a special cough medicine, have been breeding them in their convent. The sisters are part of an official breeding network that includes Chester zoo in the UK and the Michoacana University of Mexico