Their bodies don't know what to do.
Neither does their mind, to tell you the truth.
Cats react to the world around them in strange and unpredictable ways. Tiotal cats are constantly having catageddon in their heads, trying to figure out why their lives have gotten so weird, and trying to get some relief from the chaos. None of this is to say cats are dumb or stupid, it's just that they are different, and different is what makes the world interesting.
Teach your cat about quantum entanglement, and how to stay healthy when it comes time for her next trip to the vet. That sounds intriguing, so I'm looking forward to learning more about it.
I thought it was cool that it can be used to find cats who are hiding.
That's very cool, too.