Extinct Animals

Right now, scientists are trying to bring back a frozen woolly mammoth, and a saber tooth tiger. To do this, they take DNA of the dead animal, and put it into a living, unfertilized egg (without a nucleus or DNA of a living mother of the closest species and insert it into the mother. If it is fertilized later, then it will be born as the extinct animal.

Well they are now extinct, so there was a time they were in danger of becoming extinct, thus once they were an endangered species. I guess all extinct species were once endangered. It's confusing though because at that time the concept didn't exist so there was no one to think of them as endangered.

Which is sort of like the semantic question "If a tree fall in the wilderness and there is no one to hear it, does it make a sound."

When dinasours were alive

Animals need enough room to survive, reproduce and room for their offspring to migrate to. With habitat loss, this is often not possible.

There is growing evidence that a comet strike is responsible for the extinction of most of the large mammals including mastodons and humans (the Clovis culture) in NA about 13,000 years ago. Discover magazine has an article in the April 2009 issue. Their extinction has also been linked with their yearning to go down for so long that they simply stop breathing. National Geographic has an article in the June 2008 issue.

a lion dies because maybe that when they make their boundries (territory) and an animal comes to it they will fight and sometimes they die.

That could be your answer i think


The Cave Lion probably became extinct because of the usual answer: the climate (temerature), the terrain (gruond) <(ground), and the plants. The plants keep the herbivores (plant eaters) alive, and they feed the carnivores. If an animal cant get the food it needs, it will die. The temp. could get too warm or cold for the animal, so it'll die. The ground will change, and so will the plantlife thet is growing on it. Also, if they egt
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It is not known when the blue pike became extinct. Species are only declared extinct when there has been no confirmed sighting of a live specimen for fifty years.

The blue pike was declared extinct in September 1983.

megatheriam the giant ground sloth was sometimes an enemy and the terror birds were enemys too

Baryonyx was a fish-eating dinosaur that lived some 125 million years ago. It had long curved claws that it used to help it capture fish. It's name comes from the Greek meaning "heavy claw" and it is the only species in its genus. It's long jaw is low and narrow, and lined with finely serrated teeth - an adaption to aid it in hunting, killing and eating the fish it is though to have preyed on. The 30-foot, 2 ton beast has been found only in England and a couple of areas in Europe. As there are only a limited number of specimens, their size isn't fixed. A link is provided to the Wikipedia article on this sauropod.

The Cuban crocodile is critically endangered, not extinct. They are threatened as a result of hunting in their very small range (they only lived on a few Caribbean islands; now they only live in Cuba).

When animals become extinct, it is because there is a change in their environment, and they are unable to survive. That also holds true for plants.

Today, major situations that are threatening organisms include habitat loss, poaching, and pollution.

Rabbits and other rodents, cloven animals such as horses, cows, sheep and others, and vegetarian human beings!

not likely, it was one of the apec predators in the ocean, but there were a few things that could have chalenged and killed it, but i don't think it would have been actively hunted, just like great whites today

Endangered species

There are five species of stingray that are currently listed with the status of "endangered" , according to the IUCN Red List. There are many other species listed from "data deficient" to "vulnerable". The "endangered" species are the * Ganges Stingray * Marbled Whipray * Mekong Freshwater Stingray * White-Edge Freshwater Stingray * Thorny Freshwater Stingray For more details, please see sites listed below.

Birds are hunted in many different ways:

Birds such as pidgeons are not hunted as such but they are killed by disguising poisen as food. This was the method used in Trafalger Square. Gamekeepers either set poisen down or traps. The old method was to shoot them but you would of had to be quite a sharp shot to hit a bird with a shotgun.

People will recreate the quagga by taking zebras that naturally look like quaggas and breeding them with other zebras that look like quaggas and eventually they should have a whole herd that looks like the quagga. for more information on the quagga project visit this website --- http://www.quaggaproject.org

Quite alot I think.

The subfamily Machairodontinae (saber toothed cats) evolved about 23 million years ago, during the Oligocene series, which is part of the Paleogene system. They became extinct about 10,000 years ago. So they existed for nearly 23 million years.

50 times faster than the normal rate!

Which of these is not a reason that species become extinct

It's complicated, but to be honest, it's likely to happen.

Humans are a very advanced species, and have a basic method of survival. They can survive in tough environments all over the world. So for the entire human race to be wiped out there is one man-made theory, in which the whole world would get into a nuclear conflict and everyone successfully blow each other up.

There are two other theories, in which 1) A bolide-fireball-missile meteoroid (a very large impactor) can hit the Earth and extreme volcanism can happen, and 2) a very catastrophic climate change.

just hope this doesn't scare you too much

a food chain starting from the producers ;)

There were several species of mammoths, some of them big and others not so big. The largest one was the Sungar mammoth, which was 5 meters tall and was heavier than a Tyrannosaurus rex! But the most famous mammoth, the woolly mammoth, was around the size of a modern day Asian elephant (around 3 meters tall).

up to 10 a year