Why did dinosaurs become extinct? (Brain teaser) Please, everyone, thank you.

The reason why the pig was killed was that dinosaurs existed a long time ago, and then there was a sudden flood, so God built a boat called Noah's Ark, but the boat could not carry too many animals, so God told the animals to fight their jokes or drown. There are thirteen seats on the boat. The first twelve seats are the zodiac and the last seat. Then dinosaurs appeared. He told a joke and everyone was happy, but the pig didn't laugh. Dinosaurs committed suicide by diving, and then it was human turn. The pig smiled: Hahahaha ... dinosaur jokes are so interesting ... (The pig is slow to respond. )