Cats have long hair when they are young, but whether their hair will become shorter when they grow up depends on their breed and individual differences. Some cat breeds may have coat changes as they grow. For example:

Certain breeds of cats may have hair loss when they are young. Longer hair, but as it grows, the hair gradually becomes shorter or thicker.

Environmental factors may also affect hair length. If cats live in warmer environments, they may experience seasonal hair loss, causing their coats to appear shorter.

However, in most cases:

A cat’s hair length is primarily determined by her genes.

If your cat is from a breed that typically has long hair, it is likely that the hair will remain long as they grow older.