Why Don't Tree Frogs Fall?

On the ends of a tree frog's toes are pads that work like suckers. With those toe pads the frog can hold on tightly to trees or grass. It won't fall even if it hangs upside down. Because the tree frog's toes are long and will bend easily, it can hang onto the branches as it walks. Tree frogs are very sensitive to the amount of moisture in air. When it increases with the approach of rain, the frogs croak noisily as if they were happy. A tree frog is only 3 or 4 cm long. Holding on with its toe pads, it can even hang upside down. The frog uses the pads to hold on to grass or tree branches. It preys largely upon insects and spiders.