You don't have to worry about long-term repercussions for verbally chastising your cat with a hiss, and I can say that from personal experience.
My two are almost overly clingy and very loving and have been chastised like that when misbehaving since I've had them. Although I find a hiss hard to do and just do a TSST of varying intensity.
They understand it and it works well. Saying "NO" has never ever worked for me consistently, even though its louder and in a very deep tone to sound different than normal speech. A "TSST!" or hand clap or finger snap though, works every time. Had to use it quite a bit teaching them not to constantly mess up my blinds, and now they don't touch em.
But at 9 weeks, I would have very low expectations and just count on em to be wild and goofy and handle damage control, heh.
My two are almost overly clingy and very loving and have been chastised like that when misbehaving since I've had them. Although I find a hiss hard to do and just do a TSST of varying intensity.
They understand it and it works well. Saying "NO" has never ever worked for me consistently, even though its louder and in a very deep tone to sound different than normal speech. A "TSST!" or hand clap or finger snap though, works every time. Had to use it quite a bit teaching them not to constantly mess up my blinds, and now they don't touch em.
But at 9 weeks, I would have very low expectations and just count on em to be wild and goofy and handle damage control, heh.