仓鼠：Hamsters are stout-bodied,with tails shorter than body length,and have small furry ears,short stocky legs,and wide feet.Their thick,silky fur,which can be long or short,can be black,gray,honey,white,brown,yellow,or red depending on the species,or a mix of any of those colors.
蛇：A snake has been on the earth for over 130 million years.Without limbs,it can climb,swim and sometimes fly.Of the 2700 known species,each share three common traits.It has a thin,linear limbless body,eats meat and is cold blooded.It has an expandable jaw and can swallow prey larger than itself whole.
金鱼：Goldfish originated in China and Japan,and have been bred to obtain the interesting colors and shapes of today.Their skin is covered with colorful scales.They have two kinds of fins:single fins on the tail and back to provide stabilization and paired fins on either side which help steer and guide.And they are notably greedy eaters and learn quickly about “feeding time”.