Answer:
Extinct animals have been wiped out by some kind of limiting factor, such as droughts, loss of land, flooding, or forest destruction. Some species of animals, such as the dinosaurs, are still being argued over by scientists on how the became extinct. But, a few years ago, An animal that was thought to be extinct was caught off of a Japanese ocean! It as the goblin shark. It was supposed to have died out millions of years ago, but its alive.