有没有关于动物的英语谚语故事

那时狗衔着的肉。结果两头都落了空. Thinking it was another dog with another piece of meat, dropped into the water and was never seen more, on his way home he had to cross a plank lying across a running brook. As he crossed, but as he opened his mouth the piece of meat fell out选自伊索寓言 The Dog and the Shadow（狗和影子） It happened that a Dog had got a piece of meat and was carrying it home in his mouth to eat it in peace. Now, he made up his mind to have that also，因为他想要抓取在水中的那一块，以为是另一只狗，而原来的那一块，只不过是一个影子。 Beware lest you lose the substance by grasping at the shadow. So he made a snap at the shadow in the water，走过一条河上面的桥，狠狠地扑向那只狗. 一只狗嘴里衔着一块肉，也被水冲走了，比他自己的还要大一倍，看见他自己在水里的影子, he looked down and saw his own shadow reflected in the water beneath。因此他仍掉自己的那一块，想夺到那一块较大的肉. 谨记，切莫因追逐幻影而丢失已有的东西