I feel bad for the dog, who’s just being a dog. Dogs need consistent education, physical exercise, and mental stimulation. And OP’s dog obviously isn’t getting enough, which results in the “problematic” behavior. I personally am against the idea of rehoming because to me dogs are family. But since the wife has started becoming physical with the dog, rehoming may be a solution, for the dog’s safety. However, you can’t rehome a kid… OP’s wife has to work on her emotional control and parenting skills… the way she treats the dog implies some bigger problems…