Torrent frogs use their toes, belly, and thighs to attach to rough, wet, and steep surfaces. In a multipart study, researchers compared the attachment abilities of two species: torrent frogs (Staurois guttatus) and tree frogs (Rhacophorus pardalis). They found that the torrent frog is better able to attach to extremely wet, steep, and rough surfaces due to its superior attachment abilities.

Source: Torrent frogs use toes, belly, thighs to hold tight under waterfall-like conditions