Biography of Grizzly bear
Grizzly bear is often called the "brown bear". The grizzly and brown bears are the one species of two different continents. Grizzly is also called some times as silvertip bear. Grizzlies bears 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.
Appearance of Grizzly bears
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.
Grizzly bear's Reproduction
Grizzly bears 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 will not mate.