动物在自然界中，与它们的天敌相比属性被克制，主要原因就在于处在不同的生态位之下，生存法则的完全不同所造成的。为了逃脱天敌的捕食，动物的第一保障是“知”，第一反应是“逃”，如果逃不掉，那么无论是体型上的巨大反差，还是防御手段的不足，甚至基因上的压制，都决定了它们只能被吃的命运，基本上没有什么还手之力。
弱肉强食，物竟天择，适者生存，不适者淘汰 水生到陆生 简单到复杂 低级到高级 脊椎动物由鱼类到两栖类到爬行类 爬行类又分别演化成鸟类和哺乳动物 出现-演化-繁盛-灭绝 不能适应环境就会灭绝。
而处于食物链下层的这些动物，在提高反应和逃跑速度、增强繁殖能力等方面的演化，则在一定程度上弥补了“属性被克制”的问题，从而可以保障种群稳定地存在下去。
The survival of animals in nature
In nature, animals are restrained compared with their natural enemies, the main reason is that they are in different ecological niches, resulting in completely different survival rules. In order to escape the predators of natural enemies, the first guarantee of animals is to "know" and the first reaction is to "escape". If they can not escape, then no matter the huge contrast in size, or the lack of defense means, or even the suppression of genes, all determine that they can only be eaten the fate, basically there is nothing to fight back.
Law of the jungle, things have natural selection, survival of the fittest, is unwell is eliminated Aquatic to terrestrial simple to complex Low level to high level of vertebrates by the fish to amphibians and reptiles Reptiles and evolution in birds and mammals - respectively - boom - extinct Can not adapt to the environment will become extinct.
However, the evolution of these animals at the lower level of the food chain in terms of improving the reaction and escape speed, and enhancing the reproductive ability, makes up for the problem of "attribute restraint" to a certain extent, thus ensuring the stable existence of the population.
