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1. The scientific name of the octopus is cephalopod of the order Octopoda. Octopuses have eight arms and two eyes. They have mouths and beaks at the center of their arms. Octopuses have neither internal nor external skeleton. There are almost 300 octopus species.
2. Octopuses are known to be bilaterally symmetric.
3. Octopuses are considered to be the most intelligent among the invertebrates.
4. Their usual place of habitation is coral reefs.
5. All octopus species are poisonous. Blue-ringed octopuses can kill human being.
6. The life expectancy of octopuses varies between six months and five years.
7. It has been scientifically proven that octopuses have both long-term and short-term memory.
8. Octopuses have three hearts.
9. The weight of Giant Octopus is almost 400 pounds or 180 kg.
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