About 65 million years
dodo birds I believe are extinct. if i am mistaken then dinosoars
Many believe they were hit by a meteor
No one knows exactly. Many many years ago
None, they have been extinct for a long time. None, they have been extinct for a long time.
they aren't extinct
the white tigers have been extinct since 2006
They have never been extinct. They may be endangerd due to poaching.
The Tasmanian forester kangaroo is not extinct.
dinosoars? No. They had long been extinct. The only predators that could trouble an adult Sabre tooth would be maybe giant bears, huge crocodiles and some pretty big and nasty hyena-like things that lived about that time. Of course, their young would be vulnerable to much smaller predators.
No!
Since 1921.
251(ish) years