Nevertheless, as early as the 1920's, researchers found that cats can learn complex tasks, especially if the reward is food. And in highly structured tests of learning ability, cats often outperformed dogs in the ability to master conceptual problems. Researchers have found that some cats do as well with this type of conceptual learning as monkeys. And, aside from monkeys and other primates, cats are among the most adept at learning by observing the successes and failures of other animals attempting to complete tasks to obtain a reward. All of this data proves that cats are really super smart. And the hero of this video is not an exception. Check out this clever cat wearing a cone who accidentally discovers new way to drink. Don't you still think that cats rule the world?