I gave our Mamirauá guides Carlos and Francisco a lot of credit for locating several of these tiny, well-camouflaged frogs for me on the forest floor. Whenever they noticed a flash of movement, they'd stop and stare carefully at the leaf litter for something frog-shaped. About half the time the frogs made a clean getaway, but the other half of the time they'd be spotted sitting perfectly still, brown on brown.

"Tropical Lowland Bullfrog" is the most commonly listed name for this species on the web, but it is quite a silly name, as these inch-long frogs are about as un-bullfroggy as a frog can get.

Here is an account of the four days we spent at Uakari Floating Lodge in the Mamirauá Sustainable Development Reserve.