Youngsters of this ant-eating specialist look very similar to some of the poison frog species such as Ameerega hahneli. But full-grown adults like this one are easy to recognize; they are significantly larger than the poison frogs in this area, and they are somewhat rounder and less angular.

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

This was a particularly gigantic adult, nearly three inches long. It didn't really look like a poison frog at all. Maybe one of these years I'll actually get a photo of a youngster to illustrate the claim that they look like poison frogs.

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.

They aren't called Antnest Frogs for nothin'. The male frogs like to hang out in ant nests when calling, and the female frogs lay their eggs in foam nests in cavities in the underground ant nests. We got to experience some evidence of this when my guide Amanda Quezada was stung by several ants when trying to wrangle the first frog above for photos.

The second frog above was just sitting there, and thus required no wrangling, and thus nobody was stung. Is that even a real frog? (Yes it is.)