The right side of your cerebellum controls coordination on the right side of your body; the left side of your cerebellum controls coordination on the left. Diseases that damage the spinal cord and peripheral nerves that connect your cerebellum to your muscles also can cause ataxia. Ataxia causes include: Head trauma. Damage to your brain or spinal cord from a blow to your head, such as might occur in a car accident can cause acute cerebellar ataxia, which comes on suddenly. Stroke. When the blood supply to a part of your brain is interrupted or severely reduced, depriving brain tissue of oxygen and nutrients, brain cells die.
A polar bear has one of the best noses in the entire world and are well known to have an incredible sense of smell. Polar bears have been seen walking in a straight line for 32km (20 miles) to food, with only their nose to guide them. Polar bears have also sniffed out a seal ten football fields away that was hidden under 1m (3') of ice.
In one test, a 700 pound dumpster that required two people to tip it over could be rolled around like a beach ball by a single grizzly bear. Grizzly bears can sprint at up to 40 miles per hour. A grizzly bear can weigh up to 800 pounds and live 20 to 30 years. These bears primarily eat plants, berries and tubers. They also eat grubs, fish and occasionally meat.