Animals become extinct because of...
The plant or animal is said to have become extinct.
Ther are mammoths they have benn extinct for years
Extinct
It depends on the type on animal
because when one animal extinct the animal who eats that animal would maybe or absolutely have no other animal to eat so that animal who eat the extincted animal would become extinct then another then another. So maybe all animals may die.
Tasmanian tiger.
Propagate the plant and save the animal. The plants are not likely to become extinct by dint of being eaten by the animal. However, the animal is far more likely to become extinct by loss of its fodder.
Endangered and extinct animals are similar because endangered animals sometimes become extinct.
It is possible for any animal to become extinct. The jaguar is endangered and we need a solution to keep them around.
The Dinosaurs.
extinct
Tiger, orangutan and hornbill