To warn or to hide from predators? New computer simulation provides answers
(PHYSorg.com Biology)

Scientists have understood quite well why so many poisonous or bad-tasting animals have brightly colored bodies-the colors send a message to the predators: `Don`t eat me, or you`ll get sick and die.` These permanent warning signals became textbook examples of `aposematism,` which is the use of conspicuous signals to warn predators.