Because my husband took a physical picture book called "Illustration of Paleontology" by Daxiong.

So the mammoth appeared. ......

Doraemon: How did you get the mammoth out?

Husband: Don't touch him! He is not easy to deal with when he is angry!

Nobita: How about that?

Doraemon: I have to sing softly to it to calm him down.

Doraemon: Elephant, elephant, why is your nose so long?

......

Finally, in order to put the mammoth into the picture book, Nobita was also put in.

Hehe ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~