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Does every living creature including including insects and tiny marine animals have a brain?

No, for example jelly fish. They are living things and they don't have brains. And look at plants, they don't have "Brains" so there are alot of species that don't have names.


How much does any animals brain weigh?

The weight of an animal's brain varies depending on the species. For example, a human brain typically weighs around 3 pounds. In comparison, the brain of a blue whale, the largest mammal on Earth, can weigh up to 20 pounds.


What is difference between suture and sulcus?

Suture is a fibrous connective tissue joint between two or more structures (e.g. bones in the brain). For example, there is a sagittal suture between the two parietal bones of the skull. Sulcus is the fissure on the surface of the brain which surrounds the gyri. For example, there is a central sulcus which separates the frontal and parietal lobes of the cerebral cortex.


How much does a lizards brain weigh?

A lizard's brain typically weighs only a few grams, depending on the species and size of the lizard. For example, the brain of a small lizard can weigh around 1-2 grams, while larger species may have brains that weigh up to 5 grams or slightly more. Overall, the brain size is relatively small compared to the body size of the lizard.


Is an elephants brain bigger than a humans?

nope infact research shows that an elephants brain is actually the size of a peanut and our brain is the size of both our fists put together so our brains our actually larger than a giant elephants appearance does not matter when it comes to brain size.:)