You don't just leave, not unless your life is at risk. Most of the people posting that advice are doing so kindly, but in truth have no idea.
Same with the people saying you should have your independence blah blah blah. Hindsight js a wonderful thing and no, you don't know that the violence or the abuse is going to happen when you got married/had kids/set up a home and a life in a way that suited you at the time.
So you plan. It means you have to live in that situation and endure it for a bit longer - unless of course he does threaten your life. You squirrel away money where ans when you can, even take out a loan or credit card in your own name if need be. It's easier now as things can be done completely online.
You keep your gob shut and put up with the comments because provoking him now could lead to him being dangerous. You become the wife he thinks he deserves because otherwise you provoke him. You do not ever show your hand until the time is right.
You cultivate friendships or admit to friends and/or family what is happening. If you can find someone you can run to if you have to leave the house quickly and do not ever leave your animals with him, so that someone needs to know you come with pets and accept that.
Nearer the time you buy a few extra bits of toiletries and a small overnight bag. You put a few bits of clothing each week in that bag and if he mentions anything say you threw it out. If you can and have your own bank account that he can't access, you buy a few bits and put in your bag each month. You add a few extra bits of cat food to the week,y shop and put those in your bag. Make sure you know where the cat carriers are and put them where you can grab them easily.
You put all your documents in your handbag. This could start alarm bells ringing so you may want to do this near the end.
You find a new job somewhere else and, if you are lucky enough to work in an industry that does it, use the relocation package to rent a flat or house.
Then you go. One day, quietly, with no drama, you walk out of the house with your bag and your cats and you get in your car or a taxi or a bus and you leave him.
It took me a year.