Brevicipitidae or rain frogs, is a family of frogs. Formerly included as subfamily in Microhylidae, phylogenetical research has indicated the brevicipitine frogs should be considered as a family with Hemisotidae as the most closely related sister taxon. Most adult brevicipitine frogs are not easily seen as they spend extended periods of time in soil or leaf litter. However, some species might be partly arboreal at times. Many species show strong sexual size dimorphism, with females being much larger than males.