The elephant is the biggest animal.
  The giraffe is the tallest animal.
  The lion is faster than the elephant.
  The zebra is heavier than the tortoise.
  The penguin is funnier than the crocodile.
  The kangaroo is smaller than the lion.
  The snake is longer than the penguin.
  The tortoise is slower than the kangaroo.
  The parrot is more colourful than the zebra.
  The crocodile is more dangerous than the kangaroo.
  The monkey is the most intelligent animal.
  The hippo eats more than the zebra.