When it comes to alcohol, hallucinogens and psychedelics, humans are not alone in their enjoyment. No, animals also love to get high. So writes neuroscientist David J. Linden in his new book, &amp;#8220;The Compass of Pleasure,&amp;#8221; which has a rather lengthy subtitle: &amp;#8220;How Our Brains Make Fatty Foods, Orgasm, Exercise, Marijuana, Generosity, Vodka, Learning and [...]