Yes
The Koala (Phascolarctos cinereus) is a marsupial mammal and is indigenous to Australia. Its closest relative is the wombat. Koalas are indigenous to Australia and live in t … ropical to temperate eucalypt forest and woodlands. They can be found along the eastern and south-eastern coastal regions.  A dropbear or drop bear is a fictitious Australian marsupial. Drop bears are commonly said to be unusually large, vicious, carnivorous marsupials related to koalas (although the koala is not a bear) that inhabit treetops and attack their prey by dropping onto their heads from above.  The koala (Phascolarctos cinereus, or, inaccurately, koala bear) is an arboreal herbivorous marsupial native to Australia. It is the only extant representative of the family Phascolarctidae, and its closest living relatives are the wombats.  Eucalyptus leaves is the only food koalas eat. Although the leaves are poisonous to most animals, they have special bacteria that live in their stomachs to break down and digest them. Their diet includes up to one pound of leaves a day. The koala has special teeth adapted for their eucalyptus diet. The majority of their front and back teeth act like scissors to chop the leaves into pieces suitable for digestion. Eucalyptus leaves have a fair amount of moisture hence koalas seldom drink water. For most people koala bear is a living version of a teddy bear. However, in realty it is not really that cute unfortunately. Koalas look very cute and there is no doubt about that. Koalas have thick grey fur and a huge leathery nose. They have no tail and they have white stomachs. They love the eucalyptus trees so spend most of the time on top of these trees and sleeping here. They love the heat and since the eucalyptus trees are so huge and it is high and dry there they like to live there. In fact, it is very difficult to spot a koala bear in the wild since they are so high up most of the time. Koala bears can be very fierce and they can attack people on occasions. Therefore, it can be said that koala bears are dangerous. However, these are the endangered species and it is very difficult to find them in the first place. More Articles : Koalas are not really Bears, they are related to the wombat which is a very slow, meandering herbivore. koalas are also herbivores and do not eat anything but Eucalyptus gum leaves which are highly toxic. Firstly can I just let you know they are called Koalas-not Koala Bears as they have no relation or nothing to do with bears. I wouldn't say they are viscious but they will scratch or bite if they feel threatened. The leaves they eat constantly dope them up a bit so they are quite dozy most of the time Show All Items. A koala might seem like a cuddly animal, but deprive them of the eucalypt leaves fermenting in their guts keeping them permanently drunk, and you have a vicious killing machine. When provoked, koalas are known to throw a foreleg around their opponent and bite. With teeth like that, that's not a koala, that's a drop bear. They look like koalas, but they're slightly bigger and they fall from trees in order to eat people. When I saw this in the newsletter I immediately thought of drop bears. Too funny, and cute.
http://www.answers.com/Q/Are_Koalas_Vicious https://en.wikipedia.org/wiki/Drop_bear https://en.wikipedia.org/wiki/Koala http://www.bearlife.org/koala.html http://www.rocketswag.com/animal/bear/koala/Are-Koala-Bears-Dangerous.html https://answers.yahoo.com/question/index?qid=20080207060416AALRXK3 http://www.instructables.com/id/Vicious-Koala-Attack-Child-Costume/
are koalas bears vicious