My cat chatters her jaws just before she is about to try to pounce on or grab the guinea that she enjoys trying to catch. What is the jaw movement called or about? She doesn't make a noise with this movement--just rapid movement of her jaw.
Answer by Kate
Hi well this is known as the vacuum reaction and is part of the cats hunting behaviour, please see my page here about this for more information https://www.our-happy-cat.com/cat-hunting.html
It is quite normal but rather funny to watch I think.
best wishes Kate
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