Victoria Gill tells the extraordinary story of the Mexican axolotl: an amphibian that is both a cultural icon and a biomedical marvel. In its domesticated form, the aquatic salamander is a valuable laboratory animal and a popular pet around the world. But in the wild, the species is on the very edge of extinction. Victoria visits one of its last hold-outs among the polluted canals in the south of Mexico City, where she meets the scientists and farmers working to save it.

Producer: Andrew Luck-Baker

Picture: Street Art, Credit: BBC