There isn't much info about this species. From what I understand this is a vulnerable species and included in Appendix 3 of CITES.

Here is some additional info:
Facts about Chilean Giant Frog (Calyptocephalella gayi) - Encyclopedia of Life

The helmeted toad is closely related to the species in the genus Telmatobufo. I included a link to these three species:
EDGE of Existence :: Search Amphibians