It is pointed out in the passage that animals are traditionally believed to ............................ .

Since early times it has been presumed that animals act unconsciously . In this view , behaviour differs from instinct . Animals behave without thinking about the action they're doing at that moment. Animals may be aware of things or may be not . The argument is still going on. Recent research reports suggest a small amount of probable intelligence among animals. Despite the existence of animal consciousness not proven yet, one had better consider it.