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Smell is the most sensitive of the senses and the first to develop.
Blue eyes tend to be more sensitive to light.
Thinking about money makes people more determined and focused, but less sensitive to the needs and feelings of others, a study found.
Crocodiles’ faces are 10 times more sensitive than human fingertips.
An elephant’s skin can be up to 1 inch (2.54 centimeters) thick but is so sensitive it can feel a fly landing on it.
The U.S. Embassy in Moscow caught fire in 1977. Sensitive information was stolen by several firefighters who were also KGB agents.
The reason a fly swatter is an efficient tool for killing flies while the human hand is not is as follows: a fly’s tactile sense is controlled by numerous sensory hairs covering its entire body. These hairs are especially sensitive to air pressure. The movement of a hand or any other solid object creates fluctuations of air and warns the fly well in advance of the blow. The fly swatter, however, has many holes arranged along its surface, so that it displaces little air as it bears down on its victim. Thus the fly is caught unaware.
Lions have terrific night vision. They are 6 times more sensitive to light than humans. This gives them a distinct advantage over some prey species when hunting at night.