What does this sound mean?

[Karigan]

I haven't had any luck researching this sound.

Sometimes when my greys are trying to settle something I'll hear a loud SMACK sound coming from one of them. They do it to me too when they don't want me close; is this a dominance thing, a fear thing, or what?
Thanks.

 

[wenz2712]

Could you possibly post a video of her making this sound?

 

[schristensen13]

When my CAG makes that sound it's a warning. She usually uses it when she is scared by something or being annoyed by one of the dogs or a small child.

 

[epriddy]

I agree. Mine is usually a startle or a "I don't know what that is and I don't like it" or "Don't come near me right now"

 

[Karigan]

Thanks. I'll have to get it on tape, because his body language confuses me. He puffs up, then puts his head down, tilted slightly but keeping his eyes on my hand. When I reach for the offered head, I pet him once and then he backsteps and clacks. Maybe he wants attention but changes his mind?