I saw a lot of that among couples that were breaking up. Kittens in mucrowaves, bleach in the fishbowl. Dogs with broken necks. People are disgusting.I suggest you go to counseling and this time, stick it out. It's not an "instant gratification" kind of thing. It takes time.
Not going to happen on so many levels.
It couldn't hurt and can only help. You shouldn't be hitting people. It's not right. Your wife is a human being, not a dog. Recognize that.
Point of order, dogs should not be abused either. I wrote two VAWA Grants, managed both and supervised a unit of LE under both. One disgusting behavior of abusers is to harm or kill the victims pet.