Tree frogs are members of the family Ranidae in the order Anura of the phylum Chordata. Tree frogs have a medium or large body, with male frogs generally having a pointed snout and female frogs having a high and blunt snout; The posterior end of the tongue is deeply incised, the pear bone teeth are well-developed, the eardrum is obvious, there are webbed or webbed spaces between the fingers, the toes are almost fully webbed, and the lateral plantar is more developed; The nasal bone is small, the butterfly sieve bone is exposed, the forehead is wide or short, and the head skin is not tightly attached to the skull; The hyoid bone has no anterior protrusion of the lingual horn and a wing like protrusion.

The brook tree frog (scientific name: Buergeria robusta) is an amphibian belonging to the tree frog family and the brook tree frog genus, which is endemic to Taiwan, China, China. Head width is greater than head length; The tip of the kiss is slightly pointed, with distinct edges; The cheeks tilt outward; Nostrils slightly closer to the snout; The width of the upper eyelid is smaller than the distance between the eyes; Obvious tympanic membrane; The plow bone teeth are short rod-shaped; The tongue is larger. The forearm is thick and robust; Microwebbed between fingers; The palmar process is not obvious.

The Hainan Creek Tree Frog (scientific name: Buergeria oxycephala) is a species of amphibian belonging to the Tree Frog family and the Creek Tree Frog genus, endemic to China. The body is flat and narrow in length, with a pointed snout end and distinct snout edges. The nostrils are slightly closer to the snout end, and the distance between the upper eye face and the eyes is equal. The eardrum is obvious, the plow bone teeth are slender, and the tongue is large. The lateral metatarsal fins are well-developed; The inner metatarsal process is small and there is no outer metatarsal process. The skin on the back is smooth or has small warts; The temporal folds are obvious. The abdomen is covered with flat warts, and the throat is relatively smooth. In strong sunlight, the back of the lower body appears gray, and in dark and humid environments, the color darkens, with some appearing dark brown or brownish red.