Purring animals often appear confident and fearless. But in reality, they can be shy and fearful of their surroundings. There are several reasons for...
Dolphins have a cortex (cerebral cortex, gray matter) more developed than humans.
They have self-awareness, complex thought streams, and give themselves unique personal names.
Dolphins rescue...
Women's tears contain chemicals that block male aggression, a study by Israeli scientists found, cited by the electronic edition "Euricalert".
Specialists from the Weizmann Institute...
The sounds that usually cause problems for people are either very loud or very high pitched.
"Some common examples of very loud or high-frequency sounds...
