I've recently been replaying Skyrim (for about the fifth time now), and I've stumbled across something I thought would make for an interesting question.
The Greybeards are a group of extremely powerful, isolated mages who live on top of a remote mountain. When visiting them, none (except for one) talk to you, for it's said that they are so trained in the way of the Thu'um that them speaking to you will kill you. (For reference, in Skyrim, there exists something called the Thu'um, which is a shout that can be used to unleash varied powerful effects.) In this case, the Greybeards are so trained in the way of the Thu'um that they cannot even talk to you for the pure energy and force of their voice will kill you.
Could an organism kill its prey (to simplify things, assume this species eats primarily humans) by shouting at it? If so, how? How would this species not kill one another through its death shout?