Word for "fixing attention"

Question

I remember there's a word that means people/animal fixing their attention on something. It could be used to describe wolves or otherwise circling around preys. Does anyone know what that word might be?

Answer 1

Hard to know exactly what you're looking for ... so I'll focus on predators circling prey.

How about stalk?

Dictionary.com:

stalk: to pursue or approach prey, quarry, etc., stealthily

Your example:

The ravenous gray wolves stalked the young injured doe.

Answer 2

Rapt maybe, I was taught it meant very focused but now that I look it up it says it means someone's fascinated or captivated in whatever's happening.