Like most dragon pokemon, Kommo-o and its prior forms have long lifespans and longer childhoods, a fact which in part explains their relatively small numbers; most Alolan species are fully grown before a Jangmo-o will evolve. But while a Dratini may be mistaken for an Ekans and hunted by Yungoos, Zangoose, or a variety of bird pokemon, Jangmo-o have no such fears, for few beasts and fewer men will enter the clanging valleys these pokemon call home.
It is admittedly true that Jangmo-o are ferocious fighters, and that their scaly hide, in addition to its more famous quality, doubles as a servicable suit of armor by the standards of low-level pokemon. Yet many Jangmo-o survive to evolution without as much as a scratch, for inflicting such a scratch requires an assailant to approach far closer to a Jangmo-o than those with functioning ears will typically endure.
Those who prey on Jangmo-o, or indeed, come close enough to interact with them in any way, come in two varieties. Some – among them, their few natural predators – are pokemon such as Noivern and Yanmega, who have become almost immune to loud noises after producing so many of their own. Others, such as their human trainers, do not hear their clanging scales because they can not hear anything at all.
It is said in Alola that Jangmo-o are a consolation for the deaf, and indeed, when someone from the region loses their sense of hearing (or comes of age, in the case of those deaf since birth) they will typically enter the valleys inhabited by Jangmo-o and seek one of their own. Should someone with a functioning sense of hearing brave the noise to do likewise, they will return home as deaf as any other Jangmo-o trainer.
