The term 'a dog is a man's best friend' was first used way back in 1789 by King Frederick of Prussia. He's claimed to say, “the only, absolute and best friend that a man has, in this selfish world, the only one that will not betray or deny him, is his Dog."
How true the above statement is? Well, we don't know whether a dog would ever betray us. But science at least confirms that a the presence of a novel dog in an unfamiliar setting lowers our cortisol levels. So go out, hang out with some dogs as a great stress reliever.
»Money can buy you a fine dog, but only love can make him wag his tail.«
Richard S. Friedman - American Musician