Octopuses Taste With Their Skin

Octopuses have the largest brains of any invertebrate. In fact, their brain-to-body ratio (hypothesized to be correlated--albeit loosely--with intelligence) is higher than many intelligent animals, like dogs. Also, they have about as many neurons as a dog. But the intelligent nerves are not clumped together like a normal brain. It's actually spread out in 9 different clumps (some say they have nine brains). There is the central brain but it only contains 10% of the entire population of neurons. Another 60% actually are found in their tentacles.

https://steemit.com/nature/@thekenny/7-crazy-facts-about-octopuses