The octopus has three hearts - an interesting fact from the animal kingdom. One of the largest octopus species is the Dofleini species. Its weight is 20 kg, and its length can reach about three meters.
In his body, unlike other aquatic inhabitants, there are three hearts. He can easily make his way through a hole the size of a ten-kopeck coin. This type of octopus is quite dangerous for humans, since it has enough poison to kill several people at once.
On eight tentacles are two thousand suckers, each of which can hold ten kilograms. That is, in total, it turns out that the octopus is able to lift about two hundred kilograms with all the suction cups.