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	{{Template}}Any of several marine [[mollusc]]s/[[mollusk]]s, of the family ''[[Octopodidae]]'', having no internal or external protective shell or bone (unlike the [[nautilus]], [[squid]] or [[cuttlefish]]) and [[eight]] arms each covered with [[sucker]]s. Many portrayals of octopuses in movies depict them as evil, such as ''[[The Little Mermaid (1989 film)|The Little Mermaid]]'' and others.		{{Template}}Any of several marine [[mollusc]]s/[[mollusk]]s, of the family ''[[Octopodidae]]'', having no internal or external protective shell or bone (unlike the [[nautilus]], [[squid]] or [[cuttlefish]]) and [[eight]] arms each covered with [[sucker]]s. Many portrayals of octopuses in movies depict them as evil, such as ''[[The Little Mermaid (1989 film)|The Little Mermaid]]'' and others.
-		+	== Intelligence ==
	Octopuses are highly [[intelligence|intelligent]], probably more intelligent than any other order of [[invertebrate]]s. The exact extent of their intelligence and learning capability is much debated among biologists, but maze and problem-solving experiments have shown that they do have both [[short-term memory|short-]] and [[long-term memory]].		Octopuses are highly [[intelligence|intelligent]], probably more intelligent than any other order of [[invertebrate]]s. The exact extent of their intelligence and learning capability is much debated among biologists, but maze and problem-solving experiments have shown that they do have both [[short-term memory|short-]] and [[long-term memory]].
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		+	== Autophagy ==
	A common belief is that when stressed, an octopus may begin to eat its own arms. However, limited research conducted in this area has revealed that the cause of this abnormal behavior, called [[self-cannibalism|autophagy]], may be a virus that attacks the octopus's nervous system. Thus this behavior may be more correctly labeled as a neurological disorder.		A common belief is that when stressed, an octopus may begin to eat its own arms. However, limited research conducted in this area has revealed that the cause of this abnormal behavior, called [[self-cannibalism|autophagy]], may be a virus that attacks the octopus's nervous system. Thus this behavior may be more correctly labeled as a neurological disorder.
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Revision as of 09:59, 27 January 2008

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Any of several marine molluscs/mollusks, of the family Octopodidae, having no internal or external protective shell or bone (unlike the nautilus, squid or cuttlefish) and eight arms each covered with suckers. Many portrayals of octopuses in movies depict them as evil, such as The Little Mermaid and others.

Intelligence

Octopuses are highly intelligent, probably more intelligent than any other order of invertebrates. The exact extent of their intelligence and learning capability is much debated among biologists, but maze and problem-solving experiments have shown that they do have both short- and long-term memory.

Autophagy

A common belief is that when stressed, an octopus may begin to eat its own arms. However, limited research conducted in this area has revealed that the cause of this abnormal behavior, called autophagy, may be a virus that attacks the octopus's nervous system. Thus this behavior may be more correctly labeled as a neurological disorder.