Denver Zoo staff assisted a breeding project at the Huachipa Zoo in Lima, Peru, in December and met with experts from around the world on strategies to preserve the giant frogs in the lake that straddles the border between Peru and Bolivia at 12,500 feet.

The Lake Titicaca frog is the Denver Zoo's top conservation project. Since 2007, the zoo has spent about $100,000 and advised local conservationists in the effort.

Although the five hatchlings did not survive, their births were considered a major step forward.