There is no 'most extinct'. Once they are gone, they're gone. The most endangered great whale is the Western Pacific Gray Whale. See Related Links.
Ivory billed woodpecker, there are less then 50 in the world.
dinosours
You are either extinct or extant. Dead is dead, there are no degrees of it.
bald eagle
the mostquieto ansasters
Extinct
Humans are the answer! humans caused more animals to go extinct than any other animal.
If an animal is endangered, it is in danger of becoming extinct.
Cheeta
you can't have an extinct animal living. It can be endangered or close to being extinct, but not extinct.
Any species of animal that no longer has a living animal in the world is said to have become extinct.The Dinosaurs, Dodo and the Passenger Pigeon are three animal species that are classed as being extinct.
As with most extinct animals, humans are to blame for the quaggas' extinction. This animal was ruthlessly hunted for its meat and skin.