The meaning of a cat with its tail upright:

1. A cat with its tail upright may do this to express friendliness and closeness, and to increase affection.

2. It may also be caused by the cat being frightened or threatened.

3. If your cat’s tail is standing upright and its hair is frizzy, it may mean it is trying to attack you.

4. It is also possible that the cat will hold its tail up when it is in heat.

Solutions to cats with their tails standing up:
1. If it is a normal situation, the owner does not need to worry too much. This is just a normal physiological behavior of the cat.

2. If it is caused by estrus, the cat can be bred or sterilized to solve the problem.

3. If it is caused by the cat’s emotions, you should soothe the cat’s emotions by gently stroking in time to restore calm.