Wombats are without a doubt (in my extremely biased opinion) the most lovableof Australia's many marsupials.
They are large enough to substitute for youraverage family dog and are just as playful. It is a pity
that Governmentsaround Australia seem to think it is preferable for Australians to keep exoticanimals as pets
rather than the natives. Too bad about all the nativeanimals knocked off by cats etc. but then nobody
sees them. Wombats,Bilbies or some other carefully selected species might well substitute for the
dreaded moggie or doggie. It must be said however that Wombatsin particular don't automatically do well
in captivity and only a handfulwould make a suitable pet. Please don't write to me asking where you
can buy one! You can't. In particular anyone outside Australia should realize that there is a
good chance that any Australian fauna that you might come upon has been smuggled out of this country.
A high proportion of smuggled fauna dies in transit. Don't buy Australian fauna unless you are
certain it has been obtained legally. Otherwise you are just helping the murderers.
There
are three species of Wombats. The most numerous and widespread is the Common Wombat (Vombatus ursinus).
This animal is foundfrom the Queensland/New South Wales border, around the coastal (not usuallyin
the dry interior) band through to South Australia. It prefers forest covered hill or mountainous areas
that provide both good hillsides to burrow in to and native grasses to eat. Adult wombats are BIG. They
can weigh in at 40kg although 30kg is more common. They are very strong and determined animals which sometimes
gets them into trouble with farmers. Presented with a fence they will often push their way through and leave
a hole large enough for less desirable intruders such as Dingoes and rabbits. While Wombats are a protected
species, there are still some are asparticularly in Victoria where they are shot as vermin. There is a subspecies
of the Common Wombat which is now only found on Flinders Island in Bass Strait.It was found on other Bass Strait
islands but is now extinct there. Itis smaller than its mainland cousin and has the scientific name
Vombatusursinus ursinus.
The Southern Hairy-nosed Wombat (Lasiorhinus latrifrons) is an arid climate
animal and only lives in a few areas of southern South Australiaand Western Australia. Its range was much
wider before European settlement. It is well adapted to it's harsh environment where it must survive without
water in high temperatures. The available food tends to be fibrous and low in water and protein. It
lives in extensive warrenswhere the atmosphere is cool and humid during
the hot daytime. Its body temperature
falls to conserve both energy and water. Theresting metabolic rate is slower than Common Wombats and
food is thoroughlyground up and passes very slowly through the gut (8 days) for maximum nutrientextraction.
Its burrow system is more social than for Common Wombats where 5 to 10 animals consisting of both sexes
may live together. Awarren system consists of a central set of burrows often occupied by the males and
smaller warrens within about a 150m radius where females reside for varying periods. Hairy-nosed Wombat
breeding is more seasonal andmale aggressive behaviour is usually restricted to that season. Young are
usually born September to December and spend the next six to nine months in the pouch. Sexual maturity
occurs at about 3 years of age. Hairy-nosed Wombats require a minimum of three good seasons to increase
their population. In arid areas this is not common, so it pays to be long lived (and patient) to make the most
of the good times when they occur.
The third species is the Northern Hairy-nosed Wombat
(Lasiorhinuskrefftii) which would have to be considered to be on the brink of extinction.The fossil record
indicates that this animal was once widespread in inlandVictoria, New South Wales and Queensland. By the beginning
of this centurythe only two known populations were near Deniliquin in southern New SouthWales and in the Moonie
River area of Queensland. These animals died outin a drought early in the 1900s. This was probably not due to
drought alonebut to competition from introduced grazing animals such as cattle and sheep.The Wombats have a
narrower preference of food species. At this stage extinctionwas assumed. In 1937 a small population was
discovered in Epping Forest in Queensland near Clermont. It took until 1982 (to our shame) to exclude cattle
from their area and give them a chance to increase in number. In 1971 there were only 35 individuals counted,
but 1995 there were about 80. A recent report suggested this number had dropped again to about 60 but this is
unconfirmed. They will remain in great danger of extinction until there are sufficient numbers to repopulate
other areas, since a single location is too vulnerable to a chance catastrophe that may wipe them out.
Common Wombats
Let me say right from the start (from personal experience) Wombats are smart. They have a large brain
and they know how to use it. They are frolicsome and will play with what seems like inexhaustible energy.
They are also quite fast afoot, able
to run at around 40 km/hr. They
are particularly fast and smart when a packet of chocolate biscuits is about to be put out of reach.
(First rule of Wombat keeping - never get between a Wombat and a source of chocolate biscuits.
Remember you can't out-run it, you almost certainly can't out-wrestle it, but you will be stream-rolled by
it. So if it comes to a choice of being assaulted by a Wombat or giving up your favorite biscuits, surrender
the biscuits, it's less painful.) Note the Wombat in the photo is running straight at the camera and appears
to have all legs off the ground!! They really can run. Fortunately for the photographer (me), the wombat
(Brutus) was only young at the time and was responding to my call, not the irresistible smell of chocolate biscuits.
Wombats as everyone knows dig holes, big holes. Their burrows may extend up to 20 or 30m long. Shorter
burrows (2 to 5m.) are made and used as well. They are usually made by digging into a hillside or creekslope.
They are dug with the short flattened claws of the strong frontlegs. The back legs are used to pushed loose
earth and rocks out of the way. The burrow is enlarged by lying on the side and scratching out the sides and
roof. (Second rule of Wombat keeping - Never keep a Wombat in a Mudbrick house. They will lie on their
sides and while away the hours digging through your walls.) They occupy these burrows during the daytime usually
alone, but sometimes shared with other individuals. Wombats may share burrows depending on ranges but usually
at different times. An individual may visit up to four burrows per night. Any dog or fox insane enough
to chase a Wombat into its burrow risks being crushed to death between the wall of the burrow and 30kg or so of
solid muscle.
While Wombats are generally
nocturnal they will sometimes come out during a winters day to make the most of some sunshine. They eat native
grasses, and roots,sedges and chocolate biscuits. Unfortunately for them, chocolate biscuit plants are quite rare.
The photograph shows a young Wombat in a peaceful moment of gastronomic bliss. The dish is straight grass
without the usual issue of bottled milk or biscuits. It should be said at this point for all those who might
misunderstand, that sweet biscuits are generally bad for wombat's (and most other marsupial's) teeth. Wombats
have either not heard this, or they don't care. As an adaptation to biscuit eating (or is it that their
natural diet tends to be high in silica and wears their teeth down?), wombat shave rootless teeth that grow
continuously throughout their lifetime (ratherlike rodents).
Breeding
(Wombat nookie)
Wombats are rather like us, they breed anytime. Females have a rear opening pouch with two nipples although
usually only one young is raised at a time. Junior will remain in the pouch for about six months before it
is either kicked out or leaves peacefully. It will then follow its mother for nearly another year.
Having raised a young wombat I have some sympathy for mother wombats. The young tend to play biting games
that must drive the mothers crazy (see page on Brutus). Young Wombats mature sexually at about two years
and can expect to live at least 5 years or more. Wombats in captivity can live long lives of around twenty
years. An adult wombat has few natural enemies, the Dingo probably being the main predator. Humans
and their cars account for many wombat deaths per year but where humans are scarce wombat numbers are limited
by the availability of food. Wombats have a home territory which, depending on the environment maybe
anything from 5 to 25 hectares. Territories are marked and defended with scent markings, burrows and
aggressive behaviour. Male Wombats will go through a threat display if an unwelcome (wombat) visitor trespasses
on a favoured feeding ground by swinging his head from side to side, showing and gnashing his teeth, and growling.
This will often be sufficient to drive away a rival, but wombat fights can occur and considerable damage
can result from powerful bites.
