Skin that acts as camouflage or secretes chemicals poisonous to predators are successful modification in frogs and salamanders, classed as what in the order anura?
reptiles
parasites
fungi
amphibians
View River Monsters: Fish With Arms and Hands? (http://openstaxcollege. org/l/river_monster) to see a video about an unusually large salamander species. Anura: Frogs Frogs are amphibians that belong to the order Anura (Figure 29.17). Anurans are among the most diverse groups of vertebrates, with approximately 5,965 species that occur on all of the continents except Antarctica. Anurans have a body plan that is more specialized for movement. Adult frogs use their hind limbs to jump on land. Frogs have a number of modifications that allow them to avoid predators, including skin that acts as camouflage. Many species of frogs and salamanders also release defensive chemicals from glands in the skin that are poisonous to predators.