any one ever try to teach their octopus any type of language? for example, sign language, or a picture based language? These creatures are supposed to be one of the smartest creatures on the planet. you'd think if a dog can learn to differentiate language (including hand signals) than an octopus could as well. that being said.... what about a writing implement? octopuses are extremely dexterous, with practice they could probably learn to manipulate either a stick in sand... or pull switches/push buttons. if a chicken can learn to play tic tac toe, what about an octopus? not sure how safe it would be to all electronics to an aqaurium... I am sure there could be a way. just curious if anyone, or any studies have been done in this manner? My degrees in psych. so this is of particular interest to me.