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Monday, 18 March 2013

Koala


Koala





Latin name:
Phascolarctos cinereus
(Greek: phaskolos means pouch; arktos means bear. Latin: cinereus means ash-colored.)
Koalas are marsupials, females having a pouch in which their young first develop. Their pouch faces the rear and has a drawstringlike muscle that the mother can tighten. They are the sole member of the family Phascolarctidae.
Taxonomy:
Kingdom: Animal
Phylum: Vertibrata
Class: Mammalia
Sub-Class: Marsupialia
Order: Diprotodontia
Sub-Order: Vombatiformes
Infra order: Phascolarctomorphia
Family: Phascolarctidae
Genus: Phascolarctos Cinereus


Subspecies:
There are three subspeies:
P.c. victor (Victoria)
P.c. cinereus (New South Wales)
P.c. adustus (Queensland).
Size:
Size is larger in the southern regions. Head-body length in the south average 30.7 in./78 cm for males and 28 in./72 cm for females.
Weight:
Average 26 lbs/11.8 kg for southern males and 17.4 lbs/7.9 kg for southern females. In the north, males average 14.3 lbs/6.5 kg; females 11.2 lbs/5.1 kg. At birth young weighs only 0.5 gm. (This is no typo; it is amazing how small they are at birth, about the size of a bee.)
Fur:
The fur of the koala in southern region is thick and woolly and is thicker and longer on the back than on the belly. Koalas in northern region have a short coat; this gives them a naked appearnace. The color and pattern of the coat varies considerably between individuals and with age.
Coat:
Thickest of the marsupials. Gray to tawny: white on the chin, chest, and forelimbs. Rump consists of tougher connective tissue dappled with white patches. Fluffy ears with longer white hairs. Coat is shorter and lighter in color toward northern regions.
Gestation period:
34-36 days.
Life span:
Their life span today varies considerably due to stress factors, probably averaging 13-18 years.
Principal predator:
Humans
First described in 1908 by E. Home.
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