Causes suddenly meow loudly:

1. Frightened. If the cat is frightened and screams, the owner should give the cat some comfort and encouragement to give the cat a sense of security. When the cat feels at ease and lets down its guard, the cat will not scream loudly.

2. Performance during estrus. If a cat smells the scent of a cat of the opposite sex nearby during its estrus period, it will make a long howling sound to attract cats of the opposite sex for mating.

3. Boredom and loneliness. If the cat is unfamiliar with the environment and feels frightened and afraid of being alone, the cat will also keep meowing because it is not used to it.

4. Being threatened. Cats will make this sound when they are threatened and are ready to fight their enemies with all their strength.

5. No sense of security. Young cats will scream loudly when they are away from their mother or when they are scared.