About Engystomops freibergi (Donoso-Barros, 1969)
Engystomops freibergi are relatively small frogs. Males measure 24–36 mm (0.94–1.42 in) in snout–vent length, while females measure 25–39 mm (0.98–1.54 in). Their dorsal coloration is variable. The skin on the dorsum is warty, with small tubercles interspersed with scattered larger tubercles. Engystomops freibergi is a locally common species that occurs in lowland Amazon rainforest. These nocturnal frogs are typically found in the leaf litter of primary forest, and they feed primarily on termites. Their breeding season lines up with the rainy season, which runs from December to March. Males call at night near temporary ponds and slow-moving streams. Their call includes a prefix and a "whine" component, and some populations also have a third "squawk" component. Females deposit foam nests on the surface of ponds.
