I'm sincerely sorry for you if you are suggesting that you are completely unable to communicate with your pet cat or observe its behavior and reason about why it makes sense just because it lacks language. I assume you don't actually have that problem but that is what your comment literally implies.

I made my point and you're ignoring it: you imply that all pain is unreasonable because the body is "irrational". By that logic, you are saying that my earlier example of a sprained ankle hurting when I lean on it means my body is "unreasonable" for signalling that I should not lean on a healing sprained ankle. Quite frankly I think anyone ignoring that and harming themselves more in the process is an idiot.

The example of a cat hissing at the veterinarian because it cannot distinguish the situation from a real threat does not mean that cat's never hiss at real threats. If you cannot even be bothered to tell the difference and blame your cat on every occasion, you're being more irrational than the cat.