Octopuses can be very interactive and show evidence of surprising intelligence.
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When Nancy King got a pet octopus, she made a serious commitment: She wouldn't spend a night away from her home in Dallas the entire time she had it.Interacting with an octopus is a lot like communicating with an alien, since these animals are vastly different from humans: Whatley points out that octopuses have three hearts, a brain surrounding the esophagus, blue blood and no bones. Yet keepers say that individual octopuses have different personalities, and some say they can tell humans apart.Whatley says an octopus needs at least a 55-gallon aquarium, with a second large tank for a sump to hold the complicated filtration equipment needed for a saltwater aquarium. Another backup tank setup is a good idea in case there's an emergency, like the octopus inking its tank, which can clog its gills and kill it.King and Whatley are members of The Octopus News Magazine Online, a community of hobbyists, professionals and scientists interested in cephalopods, the group of animals that includes octopuses.
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