How to Animate Face in-game?

I’ve animated Sequences in via Control Rig including facial animations before and I’ve animated characters for my games but I’ve never figured out how to apply facial animations in-game. Is there a way to get facial animations in an Animation Blueprint? Or is there another way to accomplish this.

What I’m trying to do is pretty simple: I want a vampire to open its mouth when biting a victim. I’m not seeing face bones on standard animations though.

I’m looking around for documentation and all I’m seeing is iPhone livelink tutorials. Is there a way to create an anim file that targets the head’s skeleton vs the body’s skeleton?