Subspecies of Brown Bear
North America is home to several kind of bears. The United States which is part of North America has many large and dangerous bears. These American bears are as follows:
1. American Black Bear
These bears are mostly found in America and are spread from the upper north to the lower east to the west in almost all American states. It is the smallest species of bear.
These bears are responsible for the most human attacks in United States as they are larger in numbers here.
A bear is an excellent sniffer so it usually breaks into people’s houses when smells food. That’s why local government instructs residents to use special dustbins for garbage to avoid bears’ entry into populated areas.
2. Grizzly Bear
It is also a subspecies of brown bears. In America, this bear is found in the upper north of the state of Alaska and some areas of Canada. Extremely heavy and can grow up to nine feet in height, makes it the third largest bear in the world. Its claws are very strong, long and pointed which help it to make burrows under rocks, ground and trees. You must have seen a bear catching a jumping fish (salmon fish) on TV, its grizzly bear. Though it is a herbivore, but when winter approaches, it has to eat a lot of meat to fatten up its body. Salmon fish, which swim back upriver from the ocean to spawn are caught and chewed alive by this bear. Besides salmon, it also feeds on other small animals such as mice and deer etc. Like Hyena, it also has a habit of chewing its prey alive.
3. Kodiak Brown
It is the largest bear in the world. It is found on the island of Kodiak in the American state of Alaska. Kodiak and Polar bears are of the same size and there is a difference of some inches between these two. They weigh about 700kgs while height may range between 9 to 10 feet. They feed on both plants and animals and are known to be the largest carnivores. They take part in the supply of shared prey, and they usurp wolf kills like moose etc.
4. Polar Bear
It weighs about 450 kg and stands about 10 feet tall. This bear is also found in Alaska, Canada, Arctic Greenland and some northern regions of Russia. Its hairs are transparent and the skin underneath is black.
Its hair colour looks light yellow in summer. It has a very thick layer of fat under its skin. The skin and thick woolly hair protect it from extreme cold and help it to swim in very cold water.
Its feet are very different from the rest of the bears, they are designed in such a way that they can walk and run on ice without slipping, and they can dig ice for prey. Experts attached GPS to them and noted their swimming, they were surprised that a bear swam 450 km long and slept for ten days after eating and drinking. By the time when they reach the snowy shore, their weight decreases considerably.
Polar bears hunt seals, eat fish and carrion. Females mostly hibernate, but the males do not.
In most polar regions, the smell of food attracts these bears to the houses and results in attacks on people there.
A Polar’s jaw is extremely strong with a strength of 1200 Psi which is more than a tiger. As it is a carnivore so it keeps the population of other animals in control.
5. Spectacled Bear:
In the north of South America is the Andes mountain range where this bear is usually found. It is a unique bear of its kind, and has a white spreading fingers-like mark on its face that makes it unique among all other bear species. It is a diurnal and nocturnal predator, about the same size as the Balochistan bear, and is mostly herbivorous.
As we know that bears are omnivores and they feed on varieties of food but remember humans are not included in their food menu. They attack humans in case of food shortages or females will fight with humans to protect their youngs.
When thousands of plant species lose their leaves in winter, the animals that depend on them, go dormant for months. This condition is called hibernation. During hibernation rate of metabolism slows down, body temperature falls, heartbeats become low, and stored fats are utilized for energy production.
Several animals like snakes, lizards, frogs, insects, bats and bears hibernate. The longest hibernation recorded to date was of a bat which lasted almost a year.
Bears with large body sizes and weight usually hibernate. Bear hibernation is very different from other animals and it baffles science. What happens is that when the female bear goes into hibernation, she gives birth while sleeping. The newborn clings to the breast of the mother and starts sucking milk. The newborn gets the warmth from the mother’s body.
Another interesting thing is that if the urine stays in the body for a longer time, it will start to form a highly toxic chemical and negatively affects the body, but the bear’s body converts the urea into protein and delivers it to its muscles and provides the muscles with energy.
Bears have a huge role in keeping the forests healthy. Love this animal and save this species from extinction.