There are several signs that you can look for to determine if your cat is stressed. Some common signs include:

1. Changes in behavior: If your cat becomes more withdrawn, aggressive, or clingy, it could be a sign of stress.
2. Changes in grooming habits: Cats are fastidious groomers, and when they’re stressed, they may over-groom certain areas of their bodies, leading to hair loss or sores.
3. Loss of appetite: Cats may lose their appetite when they’re stressed, which can lead to weight loss.
4. Hiding: If your cat is spending more time hiding, it could be a sign that they’re feeling stressed.
5. Vocalizing more than usual: Cats may vocalize more when they’re stressed, such as meowing or yowling.
6. Urinating outside of the litter box: A cat might start peeing in places other than their litter box when they are stressed,
7. Physical signs: Stress can manifest in physical ways such as dilated pupils, tensed muscles, tail puffing, fluffed fur, and a certain agitation.

It is important to note that some of these symptoms can also be caused by other medical conditions, so if you notice any changes in your cat’s behavior or health, it’s always a good idea to consult with your veterinarian to rule out any underlying health issues.

It’s also important to note that cats may express stress differently, and not all cats will show the same symptoms. Some cats may hide when they are stressed, while others may become more vocal. Observing your cat’s behavior over time and noting changes can be helpful in identifying stressors and helping your cat to feel more comfortable.