According to a recent study published in Journal of the Royal Society B, the secret of frog's powerful jumping ability lies in its leg muscles, which are far more flexible than mammals. Before jumping, frogs will squat down to stretch their hind leg muscles and challenge the laws of physics. This kind of stretching can make frogs produce incredible mechanical energy and strength, and finally get rid of the potential threat with an amazing leap.
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Frog has four toes on its front foot, five toes on its back foot and webbed feet. There are two slightly bulging bags on both sides of frog's head. That's its eardrum. Frogs can hear sounds through it. Frog's back is green, smooth and soft, with patterns, and its abdomen is white. Its skin can also help it breathe. Its airbag is only available to male frogs.
Frogs hunt with their tongues, which contain mucus. Frogs are eggs, which hatch into tadpoles and finally become frogs. Frog's body is divided into trunk and limbs, and its skin is smooth. Sports predation is: swimming, jumping and hunting with the tongue. Reproductive development is: spawning, developmental metamorphosis. Its living environment is: when I was a child, I could only live in water, and when I grew up, I could live on land.
Baidu encyclopedia-frog