The hyenadon became extinct during the start of the Oligocene. There was a mas extinction event that was called Grande Coupure and causes temperatures to decline and killed many species of animals.
400.09 m
hyenadons were probaly the size of a horse.If not bigger
No hyenas are related to cats hyeanadon is a creadont
They are not extinct.
They are not extinct.
They are not extinct.
The are not fully extinct but nearly extinct.
Most become extinct because they can not adapt to changes in their environments. Those that can don't become extinct.
In years maybe decades the panda will become extinct
No, blondes are just as likely to become extinct as redheads are.
Gorillas are not extinct.
they aren't extinct