Scientists believe the cuttlefish one of the most intelligent marine animals. The ratio of the weight of her brain to body weight, of course, did not reach the level of marine mammals, but significantly exceeds that of the fish and other shellfish.
Recently installed a curious fact proving a kind of revenge cuttlefish. Attacked a child a certain kind of predator cuttlefish in adulthood prefers to hunt on these predators. As they say - do not hurt the little ones!