THE CROCODILE OR THE WHALE?

The woman came to the zoo with her little son.They came to the cage with a mystery big animal in it.
-Look,son,this is a whale,-said the woman.
-I am sorry,but this is a crocodile,-said the man.
-No,this is a whale,-the woman was very stubbron,as a donkey.
During this time the animal crawled on the land.
-As you see,this is a crocodile,-said the man,-the whales never crawl to the land!
-Nonsense,you see with your own eyes,that sometimes they do it