How Big Can Beasts Grow? 

　　The size and outer appearance of beasts vary to the largest extent among all vertebrates. Typical beasts have a head, two ears, a neck, four limbs, a body and a tail. Due to the differences of their habitat, the sizes and outer appearances of all beasts are quite different. The smallest beast, the dormouse, is only a few grams in weight and a few centimeters in length; while, the blue whale, which looks like a fish, usually is as long as tens of meters and weighs more than 90 tons. The following are the outer appearances of some kinds of beasts and we hope they can help you to understand some parts in beasts and the changes in their outer appearances.