This kind of sound generally expresses that the cat is in a happy mood. Only cats with a close enough relationship will make this sound. Of course, there are also cats that are familiar with people. No matter who they are, they will behave very intimately. Parents should do this at this time. You can pet your cat at will, but parents should be careful when touching the cat's sensitive parts.

Tip:

Cats usually like others to touch their head, chin and back, but do not like others to touch their belly, legs, tail and whiskers. Parents need to know.