This octopus isn’t messing around.

The incredible footage below shows a giant Pacific octopus successfully attacking and killing an unsuspecting spiny dogfish shark.

Octopuses are generally prey to these sharks, but this octopus wasn’t having any of that. The murderous cephalopod had been sharing an aquarium with several dogfish sharks until staff kept finding the dead, mutilated bodies of the fish at the bottom of the tank.

To understand what was happening, they decided to film the interactions to see what was going on.

It turns out that the octopus had been killing all of the dogfish sharks that entered the tank.