Which animal has the most neurons?

The animal with one of the highest known number of neurons is the African elephant, possessing an estimated 11 billion neurons in its cerebral cortex. However, it's important to note this is slightly fewer than humans.

While brain size is often associated with intelligence, the density and distribution of neurons play a more significant role. The African elephant, despite its massive brain, does not surpass humans in total neuron count or neuronal density in all brain regions.

Here's a brief comparison of neuron counts in different species:

It is also important to note that research and estimates may vary and are constantly evolving as new data becomes available. The complexity of the brain is more important than the overall neuron count when determining intelligence.