Short and long haired cat, and hooman approved!Three of my five cats took immediately to it. The other two are taking a little longer.They can't wait till it's their turn!It is not loud at all. It's lightweight and easy to hold, even for smaller hands.When you receive it (mine was already charged enough), introduce it slowly. Let them sniff it when it's turned off, laying on a floor or table.Then turn it on without using it on them. Let them check it out and think it's a toy.I wait till it's touching their body before I turn it on instead of approaching them with it on.I don't know why people say the cat hair gets tangled. I have short and long haired cats. I've even used it on myself with medium length hair! You're not supposed to keep it in one spot for too long. Move it around slowly.Sure, it gets some cat hairs in it but it does not pull the cat hair or tangle it. No different than the few hairs you get in your comb or brush when you do your own hair.The bristles are soft and flexible.I've got one more cat almost convinced. And one that's still not having anything about it. She's young and still skittish about a lot of things. I'm sure she'll jump on board soon and I won't be able to keep her away from it!For me, it's a great scalp and neck massager.How did I find out about this? I saw a favorite YouTube channel with Maine Coons (long, long hair!!) with owner of cattery using it on the alpha male, Mr ViVo. His majesty was enjoying the heck out of it!It's a great way to bond with your cats.For under $18, and the ability to return,(don't know why you would),you can't go wrong with this.