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POLAR
BEARS are
one species of bear that you definitely will not find
in
Yellowstone
National Park! The POLAR BEAR can be found
primarily in the cold arctic regions of the North Pole.
Like the famed Grizzly
Bear, the Polar
Bear is huge! In some cases these bears have been documented
weighing
over 1600 pounds! Despite the Polar Bears extreme size,
it is an incredibly fast and powerful bear! Polar Bears
have been known to not only outrun deer on land for
the 1st hundred or so feet; but can also cross vast
distances of extremely cold open water well over 80
miles in a single swim. This amazing animal also has
the ability to dive deep under the floating ice packs;
only coming up periodically to take a breath through
an opened “Seal Hole”.
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Unlike
the majority of cold weather bears, the Polar Bear
does not habitually hibernate
for long periods
of time. In fact, they rarely hibernate at all with
the exception of pregnant females, which
conceive on average every 2-5 years. Once these females
come out of their hibernation, they will often construct
dens to give birth in. These “Polar Bear Dens” are
usually built in the snow and have been known to get
pretty elaborate. In most cases, the den is simple
with one long main tunnel leading to an oval birthing
chamber. In some cases however, female Polar Bears
have been know to build these dens with extra tunnels
and rooms (chambers).
Baby Polar Bears are
born weighing less then 700 grams. The Polar
Bear Gestation Period varies considerably
between 190 & 260 days. This variable gestation
period is due to something called “Delayed Implantation”.
What this means is, the female may not actually become
fertilized at the moment of copulation. Instead, she
may store the male’s sperm inside her and keep
it viable until suitable conditions in her body and
surrounding habitat are ideal. Some species of turtle,
like the North American
Box Turtle (which is really a tortoise),
utilize “Delayed Implantation”. In fact,
there are documented cases of female Box Turtles /
Tortoises actually laying fertile viable eggs 7 years
after mating with a male. Nature is just so amazing!
The Baby Polar Bears are born blind with very little
fur. A typical litter of Polar Bear Cubs is two, but
as many as 5 baby bears have been recorded to one female.
Unfortunately, all five babies did not survive which
is not uncommon depending on the harshness of the season
and abundance of prey. The Baby Polar Bears do not emerge
from their den until they weigh at least 18 pounds. They
will leave their mother after they are about 2.5 years
of age and will not become sexually mature until the
age of at least 5. Polar Bears have been documented living
over 25 years in both the wild and in captivity. I believe
the record captive Polar Bear had a recorded life span
of 37 + years!
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Wild
Polar Bears feed on a wide range
of items. Although Polar Bears act primarily as
a carnivore, like most bears they are also omnivorous
by nature and are opportunistic feeders. The Polar
Bears all time favorite food is unmistakably the
Ringed Seal. Polar Bears just love the flesh and
high calorie blubber of these marine mammals. The
bears will often hang out for hours at the openings
of “Seal Holes”, waiting to ambush
any returning seals. Polar Bears are extremely
crafty and patient hunters. They have very little
fear and have even been filmed killing Stranded Beluga
Whales. On rare occasions, isolated
Beluga Whales get trapped under the vast sheets
of floating ice packs. They are forced to come
up for air in any remaining “Seal Holes” in
the ice that they can locate. When this rare event
happens, the Polar Bears take full advantage of
it! Groups of Polar Bears will often surround the
exhausted Beluga Whales. As they come up to take
a breath they are attacked with claws and teeth
until they die. Total bummer for the whale, total
feast for the bear! A classic example of survival
of the fittest in nature!
Now David and I have never worked
with this amazing animal in captivity. We both admire
it as we do all living creatures. Like everything else,
the Polar Bear deserves protection. Please help us
instill an interest in wildlife protection in others
by passing on our site to your friends and family,
or even better via a LINK. We hope you take the time
to “watch and learn”, from the Sanctuary’s “EDUCATIONAL
CENTER” and our Internationally
renowned 30 + ANIMAL
WEB CAMS placed inside the large naturalistic
habitats of the Sanctuary’s Siberian
Tigers, Bengal
Tigers, African Lions, WHITE
TIGERS, Ruffed Lemurs, and Ring Tail Lemurs.
Remember, you can take “SNAP
SHOTS” directly through the WEB
CAMS to upload into our “GALLERY”,
even having a chance to win our monthly “PHOTO
CONTEST”!
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