Why does your cat hiss when you pet her?

As a language model, I don't have personal experiences like a cat hissing. However, there are many reasons why a cat might hiss when you pet her. Here are some possibilities:

Possible reasons for hissing:

* Over-stimulation: Some cats have a lower tolerance for petting than others. If you're petting your cat in a spot she doesn't like, or for too long, she might hiss to tell you to stop.

* Pain or discomfort: Your cat might be hissing because she's in pain, perhaps from an injury, illness, or a matted fur patch.

* Fear or anxiety: Cats can hiss if they feel threatened or scared. This could be due to loud noises, unfamiliar people, or even just feeling trapped.

* Territorial boundaries: If your cat feels possessive of a certain area or item, she might hiss if you try to touch it.

* Playful aggression: Some cats hiss playfully, especially if they're feeling energetic or want to engage in roughhousing.

* Medical conditions: In some cases, hissing could be a symptom of a medical condition, such as hyperthyroidism or cognitive decline.

What to do:

* Pay attention to your cat's body language: If your cat seems tense, with ears flattened, tail tucked, or dilated pupils, she might be uncomfortable and ready to hiss.

* Respect her boundaries: Stop petting your cat if she starts to hiss or show other signs of distress.

* Consult a veterinarian: If your cat's hissing is new, frequent, or accompanied by other behavioral changes, it's a good idea to see a vet to rule out any medical issues.

Remember, every cat is different, so pay attention to your own cat's individual personality and behavior. With patience and understanding, you can learn to communicate with your feline friend and avoid getting hissed at!