Tail of the cat can reveal many things about its mood and intentions.
1. If a cat keeps its tail straight up, it's a sign of friendliness and confidence.
2. If the tail of the cat is in U shape, it is a sign of relaxation and contentment.
3. If the tail of the cat is held low, it indicates cat is under stress, anxiety and fear.
4. If the tail is tucked under body that means cat is scared.
5. A puffed up tail indicates that cat is threatened and trying to get intimidate.
6. When cats are interested or focused on something, they twitch their tails.
7. Tail thumping on floor is a sign of happy and content cat.