Question: Which Animal Does Not Have Brain?

Why do octopuses have 9 brains?

The giant Pacific octopus has three hearts, nine brains and blue blood, making reality stranger than fiction.

A central brain controls the nervous system.

In addition, there is a small brain in each of their eight arms — a cluster of nerve cells that biologists say controls movement..

Which animal has teeth in its stomach?

Lobsters and crabs have teeth— in their stomachs. These are used to crush its food, but they also have a strange secondary function in ghost crabs: making a noise that wards off predators. Believe it or not, lobsters, as well as other crustaceans such as crabs and crayfish, have teeth in their stomach!

Which is the largest animal without a brain?

10 Animals That Have No BrainJellyfish. … Sea Sponge. … Sea Lily. … Sea Urchin. … Coral. … Sea Anemone. … Sea Squirts. … Portuguese Man-O-War. Sometimes called a blue bottle thanks to its translucent sac that floats on the surface, this creature is actually a traveling colony of polyps that stick together to create the Portuguese Man-o-War.More items…

What animal has 32 brains?

Leeches2. Leeches have 32 brains. A leech’s internal structure is divided into 32 separate segments, and each of these segments has its own brain. In addition to that, every leech has nine pairs of testes — but that’s another post for another day.

Which animal blood is black?

The Peanut Worms are marine animals with dark purple coloured blood and can appear almost black. The purple color is due to the protein called Hemerythrin.

Do any animals have 3 eyes?

The tuatara, found only in New Zealand, is a lizard like reptile having three eyes. The third eye comes from a gland attached to the brain known as pineal body. The third eye or the pineal body is fully developed and the tuatara can see through it.

What animal has 9 hearts?

octopusAn octopus has three hearts, nine brains, and blue blood. Two hearts pump blood to the gills, while a third circulates it to the rest of the body.

Which animal is the smartest?

What’s the smartest animal in the world? Here are the cleverest creatures aroundCHIMPANZEES. RECKONED to be the most-intelligent animals on the planet, chimps can manipulate the environment and their surroundings to help themselves and their community. … PIGS. … BOTTLENOSE DOLPHINS. … PARROTS. … WHALES. … DOGS. … OCTOPUS. … ELEPHANTS.More items…•

Which animal does not have heart and brain?

jellyfishThey don’t have a heart, lungs or a brain either! So how does a jellyfish live without these vital organs? Their skin is so thin that they can absorb oxygen right through it, so they don’t need lungs.

What animal has 8 hearts?

Explanation: Currently, there is no animal with that amount of hearts. But Barosaurus was a huge dinosaur which needed 8 hearts to circulate blood upto it’s head. Now, the maximum number of hearts is 3 and they belong to the Octopus.

Do giraffes have 2 Hearts?

Three hearts, to be exact. There is a systemic (main) heart. Two lesser hearts pump blood to the gills where waste is discarded and oxygen is received. They work like the right side of the human heart.

What color is reptile blood?

red(Consequently, their tongues, muscles and bones are all various shades of green.) Like humans, the reptiles have hemoglobin-rich red blood cells. Such cells do not last forever, and when they break down (in our bodies as well as the lizards’), the green-pigmented waste product biliverdin is made.

What animal has green blood?

Credit: Photo by Chris Austin, LSU. Green blood is one of the most unusual characteristics in the animal kingdom, but it’s the hallmark of a group of lizards in New Guinea. Prasinohaema are green-blooded skinks, or a type of lizard.

What animal has 800 stomachs?

Etruscan shrewClass:MammaliaOrder:EulipotyphlaFamily:SoricidaeGenus:Suncus11 more rows

Which animal can sleep for 3 years?

SnailsSnails need moisture to survive; so if the weather is not cooperating, they can actually sleep up to three years. It has been reported that depending on geography, snails can shift into hibernation (which occurs in the winter), or estivation (also known as ‘summer sleep’), helping to escape warm climates.

Which animal does not have a heart?

There are also numerous animals with no hearts at all, including starfish, sea cucumbers and coral. Jellyfish can grow quite large, but they also don’t have hearts. Or brains.

What animal has 7 hearts?

Hagfish. Who knew such a nasty creature could have so many hearts? The hagfish has four of them, one main three-chambered systematic heart and three accessory pumps.

What animal can never die?

immortal jellyfishMeet the animal that never dies, an immortal jellyfish! It’s called turritopsis dohrnii!

What animal does not have blood?

Flatworms, nematodes, and cnidarians (jellyfish, sea anemones, and corals) do not have a circulatory system and thus do not have blood. Their body cavity has no lining or fluid within it. They obtain nutrients and oxygen directly from the water that they live in.

What color is crab blood?

Horseshoe crabs use hemocyanin to carry oxygen through their blood. Because of the copper present in hemocyanin, their blood is blue.

What animal has 10 hearts?

earthwormAnswer has 11 votes. The earthworm has five pairs of hearts, which would make a total of ten.