An Amazon Blunt-headed Tree Snake (Imantodes lentiferus) draped over rainforest foliage
The closely related Common Blunt-headed Tree Snake (Imantodes cenchoa) was the snake that we saw most often (by far) in this area. When a local guide found this one, we all initially assumed it was another I. cenchoa, but the guide recognized its different coloring and pattern.
A very long and thin arboreal snake from the upper Amazon drainage. These snakes are mildly venomous (but not dangerous to humans), and feed primarily on frogs and sleeping lizards.