Well I took some of the advice and we had a much better night. I know we aren't magically fixed but at least I know progress is possible. I found some old toys in a drawer that were a rattle ball on a stick with a feather and a little candy cane on a string. I went in to bed early and him and I played for over a 1/2 hour with these things and the red dot. Every time one of the girls moved I distracted him with play and with some pets and cuddles. It was time to go to bed and we all curled up to sleep. At different points in the night I heard the girls get up but he never went after them. No chasing! He came up at some time in the morning and crawled under all my blankets and curled up at the back of my knees and slept. In the morning I got up he came out and was in striking distance of leann but never did a thing. Even now he is around and the girls are around and no crazies. I'm going to try to get a few more of those little toys I can play with him with and see if I keep doing this it will help. I know he was rescued as a stray maybe he just needs a little extra loving :)
The Feliway diffuser that you plug into the wall is an excellent choice.
Also regular exercise for a young cat is also very good. Those little birds on fishing poles that you can buy at any pet store really do the trick. My MewMew who is a Maine Coon goes off on tangents too and then I know that she is not getting the exercise she needs and out comes the birds on the poles. If you do the little birds too much, they get bored easily so it takes a little experimenting to see what works for your cat. Cats crave exercise and they will terrorize smaller animals just for the thrill alot of times. I also added a birdy pole for Sophia who is totally tranquil and she loves it....
Good luck and let us know what is working for you
M
As much as I hate medicating cats, there are times when it's warranted...in this case for the safety of yr kitten. Talk to yr Vet there are options, hopefully at A very low dose and for asshort a time as possible...you don't want to over sedate him...but he does need something to calm him down
A natural remedy you could try is feliway diffuser, Avail. thru yr Vet or Amazon. But Im really unsure if this would be potent enough...worth a try
Good luck
He is fixed I even took him into the vet a few weeks after I got him just to make sure that wasn't the problem. He loves the little "red dot" so I try to use that to wear him out but he lasts longer with it then I do.
I agree that he is much much too rough with your other cats. All of that biting and breaking skin can cause abscesses that might need a vet's attention and antibiotics.
If he's not neutered, then no doubt that is the answer to his roughness. If he is already fixed, then you need to wear him out by playing with him. Then he won't have the energy to go after the other cats.