Oldschool,
Some people gravitate to others when things are not right, while others isolate. Being an isolater myself, I understand. Its hard on any relationship and berating instead of understanding the partner's problem can make things worse.

I won't even suggest you get marriage counselling. Don't want to assume, but figure its not in your personality if isolation is the way you go. Animal bonds can be tremendously strong, and the loss of that bond can be every bit as painful as losing a human loved one. Had a shepherd like that. It took me 11 years to get another after she died. Dogs don't judge and they are always there for you. Is your wife an animal person, or does she not understand or is jealous of the bond? You don't need to answer if that is too personal.

Maybe you are a different person, but then, most people change. I'm glad you found your way to this forum. Sometimes getting things off your chest is easier to do when you can't see a face and can walk away at any time without any consequences. Welcome. I hope you can find at least some degree of peace here.

Sam