Animal Talk: Breaking the Codes of Animal Language

If animal behavior is mostly instinctual, why do animals need to communicate? Is it possible that there is a universal language spoken and understood by all animals on earth, including humans? Do barks, growls, rumbles, chirps, yips, and meows have communicative meanings?
"No matter what species," writes acclaimed science journalist Tim Friend, "we're all concerned with the same topics of conversation -- sex, real estate, who's boss, and what's for dinner." In Animal Talk, Friend draws upo...