It s not an elephant

I was in a Zoo last weekends with my parents. I saw a lot of interesting animals - crocodiles, monkeys, birds. One of them was a very big animal. I asked my mother: "Is it an elephant? I heard the elephant is a very big animal but never saw it". My mother answered: "No, It's not an elephant. It's a giraffe. It is very tall because it eats a lot". I asked my mother to go home and ate a big plate of potatoes. I want to be also as big as a giraffe!