Not at all odd and there have been studies to try to determine the extent of their mental reaction capabilities. In 2010 a study found that HDTV provided a new tool for studying octopus reactions and Roger Hanlon mentions (article in the first link of the thread) that it may provide a way to better study the degree of intelligence they show. The result of the initial study claims that octopuses have no personality but I disagree with both the method and the definition of personality the study used. Down slightly from the first link are several I added about other personality articles.I know this may be a odd question, but do octos ever exhibit emotional behavior?