Life of Grizzly bear
The grizzly bear and brown bears are the
one species of two different continents. Grizzly is sometimes also called as silvertip bear. Grizzlies
are normally solitary and active animals. In coastal regions these are
living gather around streams, rivers, lakes and ponds. Female produce
1-4 young cubs every year.
How do Grizzly bear look like?
Most
adult female grizzlies weigh 130 t0 200 kg. while adult males weigh on
average 180 to 360 kg. The average total length in this subspecies is
198 cm (6.50 ft), with an average shoulder height of 102 cm (3.35 ft)
and hindfoot length of 28 cm (11 in). Newborn bears may weigh less than
500 grams.
A
large coastal male of this size may stand up to 3 metres (9.8 ft) tall
on its hind legs and be up to 1.5 metres (4.9 ft) at the shoulder.
Although variable from blond to nearly black grizzly bear fur is typically brown in color with white tips.
Reproduction of Grizzly bear
Grizzly bear
have one of the lowest reproductive rates of all terrestrial mammals in
North America. This is due to numerous ecological factors. These bears
do not reach sexual maturity until they are at least five years old.
Once mated with a male in the summer, the female delays embryo
implantation until hibernation, during which miscarriage can occur if
the female does not receive the proper nutrients and caloric intake. On
average, females produce two cubs in a litter and the mother cares for
the cubs for up to two years, during which the mother grizzly bear will not mate.