Escapee pregnancy test frogs colonised Wales for 50 years29 June 2019 Share Save Ben Frampton BBC News Share SaveGetty Images African clawed frog previously tended to colonise habitats in Mediterranean climates similar to that of its native southern AfricaPrior to conventional pregnancy tests being widely available, would-be parents often relied on the help of the African clawed frog to confirm the good news. Following this discovery, the frogs were kept at four centres in the UK, but a number escaped their clinical confines and made a new home for themselves in a pocket of south Wales. Getty Images African clawed frogs are found in freshwater all over the world, including the US, Chile, France, Indonesia, Portugal and ItalyFrog factfileMales weigh 2oz (60g) and are about 2.5in (6cm) long. After laying an extensive number of traps, not a single African clawed frog was captured and researchers found this mass disappearance coincided with one in Lincolnshire - another place they colonised. So, if you find yourself walking in this corner of Wales and think you've come across an African clawed frog, there's a sure-fire way to check.