Fish and birds are oviparous animals, as they are very similar everything is possible. perhaps today we chatted on the reveal a certain truth!

• 鸟类是由恐龙变成的，难道大家就不觉得由鱼类的鱼鳞变成羽毛比从恐龙光秃秃的身上长出羽毛更容易 6。