Chester Zoo displays rare 'scrotum' frogs on edge of extinction

The Lake Titicaca frog - named after the lake where it lives on the border of Bolivia and Peru - is the world’s largest aquatic frog. It spends most its life at the bottom of the lake, absorbing oxygen from the water using its saggy folds of excess skin – a trait which has given it the label 'scrotum' frog.

Twenty of the rare amphibians are now being cared for at the zoo, where experts are studying their behaviour to try to gather new insights as part of the latest international conservation efforts for the species.