why is the koala endangered?
374674
While the koala is not considered an endangered species, it is considered "threatened". Here is another website that will answer your question regarding current issues.\n\nhttp://home.vicnet.net.au/%7Ekoalas/factsprobs.html
159296
YES\n\nThe Tasmanian Wolf is believed to have been extinct for nearly sixty-five years. Despite its appearance and its popular name, this animal was not in fact a species of wolf, nor was it a dog, which it also resembled. It was actually a marsupial -- the largest carnivorous marsupial in recent times -- and was closely related to the kangaroo and the wombat. (Its pouch is not visible in this mount.) Thus the Tasmanian Wolf's Latin name, Thylacinus cynocephalus, meaning "pouched dog with wolf head," reflects the animal's true nature as well as its similarity to the dog and the wolf. \nThe Tasmanian Wolf's resemblance to unrelated species is a result of what scientists call convergent evolution, in which similar features develop separately in different species. The Tasmanian Wolf evolved into a form comparable to members of the dog family because it filled much the same ecological niche in Australia as true dogs do in their environments. \n\nThe extinction of the Tasmanian Wolf is attributable solely to activities of human beings. In the nineteenth century, when Tasmania encouraged agriculture, the Tasmanian Wolf was considered a threat to livestock, and bounty hunters were paid twenty-five cents per scalp as part of a concerted, and successful, effort to eliminate the animal. It was soon hunted to extinction. Today, in the hopes that the Tasmanian Wolf is not truly extinct, the Australian Conservation Foundation offers $100 just for a sighting of the animal's tracks. So far, there has been none.
122789
California Condors. ENDANGERED.
598997
Koala's To Do List:\n\n1) Eat eucalyptus leaves.\n2) Look cute.
288148
I'm pretty big on species protection, but that being said, I don't really have a problem with the regional lifting of protected status. The ultimate goal of listing a species as threatened or endangered is to protect and manage the population so that it can recover to a point where it is viable enough to be de-listed. No?  Grizzlies are also a species that have political significance, because they are big, potentially dangerous, require large territories, and will wander into residential areas and/or begin to kill livestock if their population gets too large. Around Yellowstone this is beginning to happen, and people are starting to get angry. In order to keep the public from becoming anti-grizzly to a point where it affects the recovery effort elsewhere, grizzlies are going to have to be carefully controlled in areas where the population is healthy. However unfortunate for individual bears, population control is a necessary evil.  As for the comment about poaching: Poaching is illegal whether the bears are protected or not, and people who are going to poach bears will do it regardless of whether the bears are protected.
461824
Extinct species, if not extinct by human activity (shooting them, cutting their forests down, etc.), have extinct for a reason - they did not fit well to the enviournment.\nRecreation of such species may destabilize the delicate balance of nature.\nMoreover, any human interferance with nature, whether trying to do good or bad, can only harm it.\n\nThere are two (1.5) reasons. I think you can start with these, and probably the rest will come to mind after writing this. If not, I believe that other people will have further ideas.\n\nGood luck!
339816
Both of them are important.They have various habitats,ecosystem etc but that doesnt mean one is more important than the other.Extinction of a single species can lead to imbalance in the food chain and other species may start dying as a result.\n\nSo every living creature is important in the ecosystem.
397339
Hang on.  You can suspend your disbelief enough to allow for talking animals... but you can't handle the accent?  I think you should more concerned that the damn koala is talking in the first place.
357665
i've lived in the outback for most of my childhood and never seen any such animals. i say there's no proof and there not here. it would be cool to see one though
521709
Cheetah cubs have a high mortality rate due to genetic factors and predation by carnivores in competition with the cheetah, such as the lion and hyena. Some biologists now believe that they are too inbred to flourish as a species.\n\nCheetahs are included on the IUCN list: vulnerable species (African subspecies threatened, Asiatic subspecies in critical situation) as well as on the US ESA: threatened species - Appendix I of CITES (Convention on International Trade in Endangered Species). Approximately 12,400 cheetahs remain in the wild in 25 African countries; Namibia has the most, with about 2,500. Another 100-200 are thought to remain in Iran. There have been successful breeding programs, including the use of in-vitro fertilization, in zoos around the world.
238406
I don't think they are endangered, but, in National Geographic's book "Complete Birds of North America", it is listed as Uncommon to Rare.  It also says that there is no reliable information on population trends.\n\nSorry I couldn't be more helpful.
231296
The plains zebra is the only species of wild equid not near or on the verge of extinction. Both the Grevy's zebra and the mountain zebra are listed as endangered, along with one other species in the family Equidae. Zebras have also lost much suitable and expansive enough habitat, due to the rapid expansion of human populations.
881313
Basically none of the animals on the endangered species list is the rarest because animals once thought to be extinct keep getting rediscovered.  There is no way to know exactly how many of the rediscovered animals there actually are.  i do know that the Stegodont was rediscovered in Asia.  There was a television show about it and then I found this website http://web.ncf.ca/bz050/HomePage.gne.html\nSince they are so large there are probably less of them than any other ex-extinct animal, but you never know.
605018
Cheetahs aren't clones.  They are, however, genetically very similar to each other, more so than most other species.  In fact, there is so little variation among cheetahs that tissue can be grafted from one cheetah to any other cheetah and they won't reject it, even without the immunosupressent drugs given to human transplant patients.  But there is a little genetic variation.\n\nThe lack of genetic variability among cheetahs is the result of something that biologists refer to as the founders effect.  This occurs as the result of a population bottleneck, when most of the population disappears as the result of a natural disaster, or a change in environmental conditions that most individuals are not able to survive.  This is what happened to cheetahs at some point in relatively recent history.  The cheetah population was reduced to just a handful of individuals.\n\nOver time, the species either dies out entirely, or makes a comeback.  In the case of cheetahs, they came back.  However, all the cheetahs in existences today decended from this small number of individuals several generations ago.  That means that all modern cheetahs are closely related.  It's sort of like they're all cousins.  That's why there is so little genetic variation among cheetahs.\n\nOf course, there's also the theory that it's all a big government cover-up :)
414604
Extinction. \n  \n\nExtinction is a hot topic, of central interest to conservation, environmentalism and also to academic ecology. Ecologists are increasingly realizing that extinction has shaped the communities and ecosystems we see today, and that it operates on a range of timescales and spatial scales. \n\nExtinction doesn't just involve the complete loss of species, vanishing from the Earth. Extinction of local populations is often of key importance in shaping communities, even though other populations of the same species may exist in the same general area. \n  \n\nLocal extinction of populations. \n\nIn any area of forest, or patch of swamp, or coral reef, populations of animals and plants will be coming and going. If you were to compile lists of (say) all the bird species nesting in an fairly small isolated area of forest in Connecticut in one year then come back 20 years later, although most of the species in the list would be the same, the chances are that some of them would be absent (but quite likely replaced by other species). The ones that have come and gone would likely be the ones that had relatively few nesting pairs there anyway. \n\nWhy would they have gone extinct? Well, most often it would simply be that the population had a run of bad luck. Maybe there were 3 pairs nesting, and just by chance there for several years in a row there were late frosts that killed all the insects so the parents had nothing to feed their young, so the nestlings all died. Small populations are at the mercy of such 'bad luck', known as stochasticity. Even an initially abundant population (of say 150 nesting pairs) might still suffer a series of bad luck events (an exceptionally cold winter knocking back the population, followed by the late spring frosts) that can take it down from abundance to nothing at all in a few generations. \n\nAnother problem in a small population might be inbreeding. In species that normally have quite large populations and lots of exchange of genes, a range of harmful recessive genes can be present in the population without often showing themselves. Only when the population shrinks due to bad luck is there a significant chance of close relatives mating (e.g. if there are only 2 nesting pairs in the forest each year, the young are bound to end up mating with close relatives). When close relatives mate, they each have a good chance of carrying some recessive lethal genes in common; the result may be high mortality among the offspring. Experiments with repeated brother-sister crossings in domesticated animals (for several generations in a row) show that within 3 or 4 generations the young almost never survive to maturity because they have so many things wrong with them. This inbreeding effect is thought likely to hammer many isolated populations as their numbers get low, adding to the bad luck, although there are no well-documented cases of it occurring in wild populations. An apparent example of inbreeding effects appears to be the cheetah (see below), which has very low genetic variability apparently due to its numbers crashing to only 4 or 5 individuals at some unknown time in the last 10,000 years, then expanding rapidly again. Cheetahs have low fertility rates (e.g. very low viable sperm counts), and their cubs have high death rates that seem to be the result of its recent history of inbreeding. In this case, the population remained viable and recovered despite the inbreeding effects, but one can imagine that the problems might equally well kill off less lucky populations/species that reach very low numbers. \n\nObservations suggesting the importance of inbreeding in causing near-extinction:\n\n1) Gray Wolves of Isle Royale, Canada. The population was established by 1 breeding pair of wolves around 1949. By 1980 the population had grown to approximately 50 individuals, but by 1990 it had dropped to 14. Few pups were sighted by investigators who also noted that females were not breeding. Furth
218920
The manatee is definitely still endangered. In fact you may read more about this issue AND SIGN THE PETITION via the link that I have attached below. (ur welcome)\n \nUnfortunately, most of our governing body here in FL who's names all somehow end in "Bush" don't value the fragile environment whatsoever... \n\nnew anti-environmental laws are being made in this state on an almost weekly basis.\n\nBut never fear - reason is here!\n\n*This has been a broadcast from the intelligent rebels network of South Florida.
555348
Some times people kill them for the "sport" and even more for the MONEY!  Yes, like the tusks of elephants for the ivory.  It is really sad but it is true.  Minks get killed for their fur....but that has slowed down but it still is happening.  I think more people are aware of the crualty to all animals espically endangered and many have woken up to the wrong doings.  However, there are still some boneheads that don't quite get it.(But that is true in life)  PITA ia a great program trying to protect animals.