Octopus

The octopus is a cephalopod mollusc with no internal skeleton and just one beak at the centre of the 4 pairs of arms. They defend themselves using camouflage and sprouting ink that can be more or less venomous. Octopuses are very intelligent, proved by many mazes and problems sorted out by them in experiments. Their memory can store both short and long term items. Having a complex neurological system whose neurons extend even in their arms, some octopuses can mimic other species behaviours. Their eyes along with their sense of touch are excellent and their movements are either crawling or swimming by jet propulsion. In UK, octopus is considered an honorable vertebrate and in some countries you cannot operate surgery on it wihout anaesthetic.