I really like the concept and I think it is well executed other than one thing: For me, the audio seems to be backwards from what I'd expect. For example, if the mouse cursor is left of an animal, I'd expect to hear the animal's call from the right speaker. (As if the mouse cursor has ears and I'm hearing from its perspective.) I double checked my speakers are setup correctly with an audio test so I don't think it's a problem on my end.
Regardless, I think the concept is really cool and the beast hunting you is legitimately creepy! Nice job!