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It actually doesn't matter the length of time. When the last animal of that specific species is dead, the the animal is proven to be extinct.
Sometimes animals are thought to be extinct, then are re discovered, as the case of the ivory billed woodpecker in the U.S.
It usually takes many years after the last sightings of an animal before it is declared extinct. In some cases the last known animal of a species is in a zoo so when that animal dies the species will be declared extinct. This was the case with the passenger pigeon which was hunted to extinction in the early 20th century. The last passenger pigeon died in the Cincinnati Zoo in 1914.
What else can I help you with?
What is the American alligators closest extinct relative?
The American alligator's closest extinct relative is the Deinosuchus, a genus of giant alligator-like crocodilian that lived during the late Cretaceous period. It was much larger than modern alligators, with some species reaching lengths of up to 40 feet.
Are turtles extinct?
Recent discoveries have shown that they are not completely extinct, though the only dinosaurs alive today do not look much like the classic idea often shown in movies. Fossil dependence indicates that modern birds are the only dinosaurs that survived the K-T extinction event 65.5 million years ago.
What does it mean for a species to be stasis?
The species is not changing much.
What are two main causes of species extinction?
A specie can become extinct if it is over hunted, natural vegetation has been destroyed and if their homeland has been occupied or destroyed.
How much of an impact would it play if the cheetah was extinct?
Some species,such as the Thomson's Gazzelle, have evolved around speed, namely, escaping cheetahs. These, and many other of the medium to small sized prey would overpopulate and need culling. The overpopulation of these species may result in over grazing and over browsing, destroying much of the habitat.
How close is the Canadian lynx to becoming extinct?
The Canada lynx is considered a species of least concern, meaning it is still fairly common over much of its range.
How does collecting a species impact a species?
It impacts it because they mostly take so much that the species may turn extinct.
How does a scientists collecting species impact that species?
It impacts it because they mostly take so much that the species may turn extinct.
Examples of endangered and extinct species?
somebody please answer this question i need it for a project
Why do you need to save the panda?
Because it is an endangered species, and if we do not save it, it will die out, or become extinct, much like the Dodo.
Is any species of platypus going extinct?
There is only one species of platypus - ornithorhynchus anatinus - and it is not going extinct. Though elusive and rarely seen, platypus numbers are believed to have recovered to about e same population as they enjoyed prior to European settlement. Protective legislation has done much to ensure the platypus does not become extinct.
What measure is WWF taking to protect extinct organisms?
WWF doesn't do anything to protect extinct organisms. When a species has become extinct it's lost, gone forever. Not much point in trying to protect something that isn't there any more.
How long before the grevy's zebra is extinct?
Not much longer:( they are being hunt down for there skin and the amazing creature will soon be extinct unless we stop.
What happens if a species goes extinct?
play with them when they are not doing any thing and i don't like them doe and they are very brotective
Why are dodo bird an endangered species?
The Dodo bird is not an endangered species; it is an extinct species of bird. It is widely known that dodo birds became extinct because of human intervention; they were doing fine, minding their own business, until humans found these to be a good source of food and sustenance. So humans hunted them until their hearts' content, devoured their eggs and fed any remains to the hunting dogs. Dodo birds are extinct - period.
How is genetic variation related to a species chance of becoming extinct?
Little or no variation could lead to failure to adapt to changing conditions. Too much variation would prevent the species from passing on beneficial traits because they would change too rapidly.
What is the Total number of extinct wild animals?
As many as the number of people who cant careless to answer your question about extinct animals. there is too much animals to name but i think as many as 10 000 species
