Ability to predict natural disasters and cancer detection of animals

Some animals have sharp senses that help them know in advance of a catastrophe or detect cancer that astoundes scientists.

According to research by American experts, dogs can sniff and detect prostate cancer with 98% accuracy.This animal has about 200 million olfactory cells in the nose, many times more than the number of 5 million cells in the human nose.Another study has shown that dogs can smell, through a person's breath or sweat, to determine if a person with diabetes has high or low blood sugar levels.

After a 9-magnitude Richter earthquake in Japan in 2011, scientists from the country surveyed the cat's reaction to aftershocks. The results showed that in about 6 days (or more) before an earthquake, many cats began to behave abnormally and more stressfully. They show signs of "trembling, restless and wanting to escape".Cats can sense the risk of disaster because they have a wider range of hearing than humans.The animal also detects changes in air pressure, gravity and deformation on the ground.

Before the earthquake in Japan, cows were also unusual behavior, and in particular they gave less milk.This situation appeared before the disaster about 6 days and lasted 4 days later.

Before the rain, bees perceive the change in humidity in the air.As a result, they will seek shelter before the rain comes.

The time when the ladybirds gather together is the time to signal the hot weather.This is how they keep the body's moisture and protect itself to avoid drying out.

Unlike many species, sharks do not show stress or run away before a natural disaster occurs.After tagging sharks, American experts found that they often moved to areas with rapid temperature changes, or places where storms intensified.Tracking the movement of sharks can help predict when the storm formed and developed.

Like dogs, fruit flies can detect cancer.In fact, they can smell and distinguish cancer cells from healthy cells.Researching the unique method of identification of fruit flies can be an inspiration for experts to create high-tech scanning devices.

The North American grizzly is a species that has a good sense of smell, which can smell people from nearly 30km away.The sense of smell associated with other sensory abilities allows them to identify upcoming storms and natural disasters.They can also detect cancer, but conducting research on this aggressive predator is also a challenge.

In a study published in Current Biology, Henry Streby and colleagues at the University of California, Berkeley, the United States found that golden warbler leaves places that are about to be landed a day earlier.The storm caused tornadoes and killed at least 35 people."What surprised us was that the birds left very early before the storm hit," Streby said."As soon as the meteorologists announced the storm was moving in our direction, the birds almost moved out of the danger zone."

According to the World Health Organization, in 2014 tuberculosis caused 1.1 million deaths.Tuberculosis is one of the three most infectious diseases in the world.Once trained to detect mines, African giant kangaroos have been trained to detect tuberculosis.After training, the African giant kangaroo can detect the disease with an 80% accuracy.