在自物界里,动物为了适应环境而生存,各自具有防身自卫的本领,本文为了帮助教师钻研小学《自然》课本,介绍动物保护自己的几种方法。一、防身自卫。哺乳动物中,黄鼠狼遇敌产生一种恶臭的气体防身;爬行动物中的喷毒蛇,总是对准敌害的眼睛喷射毒液;节肢动物中,炮虫(又叫放屁虫)体内分泌三种化学物质,平时分别储藏在体内,遇敌后三种物质迅速流入硬壁的反应室进行化合,变成难闻的毒雾,由一个可瞄准的发射管 In the realm, animals survive in order to adapt to the environment, and each has the ability of self-defense. In this paper, in order to help teachers study “natural” textbooks in primary schools, introduce several methods of animal protection. First, self-defense. In mammals, the weasel produces a stench of gas self-defense; reptiles poisonous snakes in reptiles are always aimed at the enemy's eye spray venom; arthropods, the insects (also known as fart worms) in vivo secretion of three chemical Materials are usually stored in the body, respectively, after the enemy three substances quickly flow into the hard wall of the reaction chamber for the compound, into an unpleasant poison fog, from a targeting launch tube