The Secret Language of Cat Tails
1. Straight, with a downward curve at the end
If your cat's tail is straight, but with a little downward curve at the end, it means that it is feeling a bit stressed out either by something or someone in the environment.
This is not an aggressive posture, just a slightly stressed one.
2. Straight, with an upward curve at the end
This posture, the opposite to the previous, means that your cat is happy and relaxed. Cats tails are usually like this when you come home, when they see their cat friends or when they are just generally happy. Good news!