What kind of duck walks on two legs?

I was also asked, and the answer was, Donald Duck

I was laughed at, but actually, the answer was, all ducks

We After staying in the city for a long time, I gradually forgot the original one

We eat Peking duck all day long, but forget that the duck has two legs

I think in the future, maybe we Those duck-like things that are not cherished now will become treasures