Could this be them?
Telmatobius culeus
*edit* I decided it had to be so here is a bit of info on the frog:
In the Andes near the Peruvian-Bolivian border, at altitudes of 12,507 feet above sea level, lies Lake Titicaca. Lake Titicaca and surrounding
environments are harsh and extreme, being exposed to freezing temperatures, high levels of UV radiation, and low oxygen content. Amidst this extreme
environment lives T. culeus, an extraordinary frog perfectly adapted for such a habitat.
Telmatobius culeus is referred to as the Lake Titicaca Frog, and is only found in Lake Titicaca.
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SOURCE
[edit on 12-5-2008 by beaverg]