Both plants and animals are more intelligent than human beings in some fields. The flycatcher can lay a trap for its game. Many animals have foresight to detect coming danger. Some domestic animals are likely to be restless with anxiety before an earthquake. People can flee for safety by observing these ominous signs. We all know that an old horse had ever helped an expeditionary force getting lost find its way back. So man should be modest about his tiny achievement. He is just an insignificant member among the living creatures. Never boast to be above the animals any more.