There are many reasons why a cat meows, for example:
1. When cats feel lonely, anxious, or unable to adapt to their new home, they will let out long, pitiful cries in an attempt to get their owner's attention or seek comfort.

2. When a cat is sick, it may cry out incessantly to express its discomfort or pain to its owner. Additionally, older cats may cry out in distress due to problems such as arthritis, blindness, or hearing loss.