Although the genus Philautus was discovered in 1822, knowledge of these frogs is still fairly limited due to their small size and great variety of colours (4). Male Philautus frogs typically have internal vocal sacs (6) and the euphonious tinkling sound, which is characteristic of these tiny green and brown frogs, is most often heard during the rainy season (7).
Philautus acutirostris has a very unique method of reproduction, as it exhibits direct development. That is, the eggs develop straight into froglets, typically having no aquatic tadpole stage (4). Following copulation, the female shrub frog produces a clutch of 10 to 20 eggs (2). The eggs are usually laid on the ground, under stones or dead leaves, or on the leaves of a fern, small shrub, or tree (4). Such plants are thought to typically include the wild banana plant and epiphytic ferns (2).