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Do all animals have brains?

No, a few invertebrates(not having a back-bone) have no brains.
vaishnavi
Category: General Reference

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Yes all animals have brain for performing various activities.
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DIPU S KUMAR

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No. Some of them dont have brain.
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Arun Selvan

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Yes I guess.....
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charmingkids17

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yes even the tiniest of them have brain to sustain their metabolism.
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arjun sai

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I hope yes
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sreevani

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All animals have brain with exception of only a few invertebrates such as sponges, jellyfish, adult sea squirts and starfish.

http://en.wikipedia.org/wiki/Brain
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Gulshan Kumar Ajmani

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Yes may be they all have brain.. but not sure.
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AKP

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All mammals have brains..not sure if all water or aquatic animals have brains or not.
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Mousumi Ghosh

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No. there are many that only have a small central nervous system . Single celled organisms are a prime example as are some microscopic marine life. All mammals have a brain however.

http://wiki.answers.com/Q/Do_all_animals_have_a_brain
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rambabu

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Yes they have brains.
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V.R.JOTHIBASSU

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Yes.
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PREM LATA

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Yes they have but not developed like we human beings have.
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Sanjeev Gupta

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Though the animals have less brain, i mean in size, but all do have brain.
We are also social Animal, but the difference is that we are little smarter and intelligent than those animals.
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Ronark Bhardwaj

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Most do but not all of them.

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Sheetal Kumar N
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