Tree Frog by pbertner
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The Amazon Milk Frog (Trachycephalus resinifictrix) is a large species of arboreal frog native to the Amazon Rainforest in South America. It is sometimes referred to as the blue milk frog. Amazon milk frogs are fairly large frogs, reaching sizes of 2.5 to 4 inches in length. Adult frogs are light grey in color with brown or black banding, while juveniles will exhibit stronger contrasts. As Amazon Milk Tree Frogs age their skin will develop a slightly bumpy texture. The “milk” in the name comes from the milky colored fluid these frogs excrete when stressed. (Wiki.)
The Mossy Frog, Vietnamese Mossy Frog, or Tonkin Bug-eyed Frog (Theloderma corticale), is a species of frog in the Rhacophoridae family. It is found in Northern Vietnam and possibly China. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montanes, freshwater marshes, intermittent freshwater marches, and rocky areas. It is a semi-aquatic, semi-arboreal species that is threatened by habitat loss. The common name of the mossy frog arises from the fact that its skin is a mottled green and brown that resembles moss growing on rock, and forms an effective form of camouflage.(Wiki)
The sticky feet of the White’s Tree Frog (Litoria caerulea) provides it with an incredible ability to cling to almost any surface at any angle. But with these extraordinarily sticky toes, how do they prevent them from constantly picking up dirt which would reduce their power of adhesion? Recent research has found tiny hexagonal patterns on the frogs’ feet that channel mucus between them, which acts both to adhere the frog to the surface and then, as the foot is lifted, to carry away any dirt - the feet are entirely self-cleaning. If this could be translated to a man-made material, it could be used in adhesive products such as medical bandages to prevent contamination from occurring.
Ref: Society for Experimental Biology (2011) Tree frogs’ self-cleaning feet could solve a sticky problem. ScienceDaily [link]