This  is a Phyllomedusa bicolor, a green leaf frog. That ID looks good to me. And if it is, then I have a new word for you: biopiracy.
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The Giant leaf frog (Phyllomedusa bicolor) is a hylid frog found throughout the Amazon Rainforest of northern Bolivia, western and northern Brazil, south-eastern Colombia, eastern Peru, southern and eastern Venezuela, and the Guianas. Locally, it also occurs in riverine forest in the Cerrado. This species is now jeopardized by biopiracy because it produces a waxy secretion that may have medicinal uses against AIDS, cancer and other diseases.
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