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The marine octopus has three hearts. So not everyone has a human-like heart.

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As I wrote earlier, there are three. 2 is for Gills and the other goes to the brain.

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They have cilia

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The ELEPHANT AND BLUE WHILE

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Yes it is wide. The reason is that you have to pass blood through your big body.

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No, because some animals don't need hearts or need like 4 hearts

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3 hearts and 1 for the brain and 2 for the gills.

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they have scillias to get nutrients from water.

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African Elephant and Blue Whale

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the muscles are bigger because to pump the blood.

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No, because some animals have bigger hearts or smaller hearts or even no hearts at all. Some have multiple hearts too.

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They have 3 hearts. 2 for the gills and 1 for the brain.

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They have scillias to get the oxegen and nutrients from the water.

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No all animal hearts are not like humans. Some have several hearts

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The blue whale

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The left because they need to pump blood up their long neck.

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Octopus have three hearts one for the brain. Two for the gills.

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Starfish have tiny hairs called scillia .

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No, becuase they need blood for different reasons

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3, 1 for body and 2 for gills

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little flap-hair things

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Blue Whale (440 pounds)

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The left side because it needs to go all the way up the neck

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A Blue whale has the biggest heart (440 pounds)

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The left side is thicker because it needs to pump blood all the way up the neck.

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No, because some animals have multiple hearts like octopus

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3 hearts, 2 for the gills, and one for the blood

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cilia's that are hairs that swish to move the oxygen and nutrients

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The left side, because it is in charge of pumping blood

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Blue whale

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No... some animals have different blood and some have more hearts.

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kind of

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4

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they have 3 hearts. and 1 brain 2 gils.

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scillia's

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Cilias.

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blue wale

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ELEPHANT AND BLUE WHALEEEE.

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the left

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The left

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Some animals have similar type of hearts. Some animals (starfish) don't even have hearts!

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no

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3

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cilia

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blue whale

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the left side

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Octopie have 3 hearts, one is for their brain and stuff and and two are for their gills

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Nope!

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no

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three!

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3
hearts

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They have little hairs called cilia.

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No siree bob

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hair things

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3 hearts. One to pump blood to the brain and the other 2 are for pumping blood into their gills or something

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they have little heirs to make them live 

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they have little heirs to make them live 

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Blue whales have the biggest heart, but elephants have the biggest heart for land animals. (Blue Whales have the biggest heats out of ALL creatures )

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They have little hairs that pump the nutrients from the ocean into their body.

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The african elephant and the blue whale

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Blue whale!

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some are and some aren't

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The blue whale which is said to be the biggest animal to ever live, but we havent discovered all the ocean at all yet. So nobody knows.

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The left

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And octopus has three hearts which are used to pump blood to different parts of it's body

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The left side of the heart is bigger because that side pumps blood though their long neck

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The left side because it needs to pump blood all the way through that neck to the brain.

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left

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They have little things inside them that flows the nutrients to different parts of it's body

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The left side so it can pump blood all the way up it's long neck

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some are and some aren't

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And octopus has three hearts which are used to pump blood to different parts of it's body

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he have 3 hearts and 2 for the gills and one for the brain

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blue whale

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no but some animals they have

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the life side because the pump blood to go all though these long neck

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they have a little tiny hair is called cilia

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Some are, and some are not like human hearts.

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They have 1 heart that pumps blood to their brain, and 2 hearts that both pump blood to their gills.

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some are, but some dont have hearts or they are way bigger

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They have cilia's to move around the water, and make some oxygen out of water!

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Octopuses have three hearts are one give blood to its brain and the two other one's pump blood to their gills

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The blue whale!

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The left side because they have to pump blood all the way up their neck, and to their brain.

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they have cilia's to stay in water and
make some oxygen.

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The african elephant and THE BLUE WHALE

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the left, and to pump blood to its brain and its very thick so it has enough to go up its long neck.

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some are but not all of them

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The marine octopus have 3 hearts so no

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Octopuses have 3 hearts one for it’s brain and 2 for it’s gills

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Cilias

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The African elephant and the blue whale

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The left because it has to pump blood to it’s Brain

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some are some aren't

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3 hearts one is for it's brain two are for it's gills

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Cilias

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The African elephant has the largest heart on land and the blue whale has the largest heart in all

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No, octopuses have multiple hearts, unlike humans who have 1 heart.

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The left side, because it is in charge  of pumping blood

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no some animal hearts are different