如elephants walk on tiptoe或fish sleep with their eyes open之类的

您是要有关动物类的谚语么?如果是的话偶提供几条：
A bird in the hand is worth two in the bush.双鸟在林不如一鸟在手.
A cat has nine lives.猫有九条命；吉人天相
Let sleeping dogs lie.勿惹事生非
Never offer to teach fish to swim.不要班门弄斧.
If you don’t enter a tiger’s den,you can’t get his cubs.不入虎穴,焉得虎子.