The IQ of an octopus is equivalent to that of a human of about 2 years old.
The octopus is a highly intelligent creature, the smartest invertebrate so far proved, the intelligence of the octopus is equivalent to the intelligence level of a 2-year-old child, the octopus can think independently of the problem, looking for a solution, will use tools and make complex plans, but also can be divided up with other creatures to cooperate in the hunt, there is no invertebrate with octopus so high IQ.
The octopus can think independently and draw on the experience of others to solve problems. Untrained octopuses can easily unscrew the caps of bottles that trap them, recognize different faces, and even walk out of artificial mazes based on experience and memory alone.
Generally speaking, the number of neurons used in the scientific community is an important criterion for judging the IQ of an animal. The octopus has two sets of memory systems, 500 million neurons, a master brain and eight appendages in the carpals. Only forty percent of the neurons are concentrated in the main brain, the rest of the neurons are evenly distributed in the eight carpals, the octopus can think and act independently of each carpal foot, the octopus neurons exceed many mammals, which is also the octopus has a proof of extraordinary intelligence.
Octopus
All the organs of the octopus grow in the head, the mouth grows in the center of the body, the body is round, there are eight tentacles, tentacles have two rows of suction tubes, widely distributed in the tropical and temperate waters of the world's oceans.