The mongoose is not extinct. They are not even on the endangered list. The live in many places over the world in Asia, Africa, India and even the Caribbean.
It is an animal that is mainly found in India some people keep them as pets as they kill snakes and other reptiles. mongoose is mainly a wild animal. it is also a bike's brand name.
Extinction is the complete disappearance of a species from life. No more of that species is alive on the planet. It happens all the time; the normal rate of extinctions is called the background...