Arbok is a serpentine Pokmon that resembles a cobra. It has narrow eyes and several sharp teeth. Just below its head is a large hood with a facelike pattern. This pattern has over 20 possible variations. The pattern typically has two red and yellow eyespots outlined in black a wide black streak resembling an upturned mouth and a black Vshaped stripe above the eyespots. Arbok is capable of crushing opponents by coiling its body around them and squeezing them tightly. It can even flatten steel oil drums. If it encounters an enemy it raises its head mimics and stuns the opponent using the frightening pattern on its body. It can also make eerie sounds by expelling air from its mouth. It has been stated that if any part of Arboks body except for the head is cut off it can regrow the rest of its body again in a matter of a few weeks. It also has the ability to detect vibrations as shown in the anime. Arbok has been known to be capable of spending long periods underwater and surviving in aquatic environments. One particular Arbok could change its pattern at any time to increase power to different stats and get invulnerability to status conditions if the pattern is uncovered. Arbok is territorial. It lashes out at intruders with long fangs tipped with deadly venom. Vengeful in nature it will not give up a chase once it targets its prey or an opponent no matter how far. It makes its home in grassy savannas and plains but it can also be found in forests and desolate wastelands alongside its preevolved form Arbo. In the wild it hunts smaller Pokmon and also preys on Poppo and Onisuzume Eggs. When hunting it uses the pattern on its hood to immobilize prey then it begins constricting them and it finally poisons the target to finish them off and eat them. Source: Bulbapedia