The smaller Leptodactylus frogs can be tricky to tell apart, and I'm not certain about this one. I'm calling it Leptodactylus petersii because nothing seems to rule that ID out, and it bears a very strong resemblance to the photo of L. petersii in the Bartletts's book.

Here is a complete list of the herps I saw in the wild on my 2013 MT Amazon Expeditions trip.

Both of these little Leptodactylus frogs seem likely to be young L. petersii, though they might be some other closely related and similar-looking species such as L. leptodactyloides.

My Travelogues and Trip Lists page includes a complete list of the herps I saw in the wild on my 2016 MT Amazon Expeditions trip.