Titicaca Water Frogs

Peru is investigating what killed some 10,000 Titicaca water frogs, a critically endangered species affectionately known as the "scrotum frog," in a river that is feared to be polluted, authorities said Monday.

Peru is investigating what killed some 10,000 Titicaca water frogs, a critically endangered species affectionately known as the "scrotum frog," in a river that is feared to be polluted, authorities said Monday.