I'm looking for some advice for my rescue dog! This little cutie has been with me for about a month now, and hasn't shown any problems until now. I adopted him from a foundation that saves dogs.
In the beginning he had some anxiety but it seemed like we worked through it and after about a week he was feeling at home. He would sleep well, eat well and do well on walks (every day around the same time) and generally just being a very happy dog.
Since a few days he has been showing signs of stress and fear when we're at home, especially after we've gone for a walk. It is at its worst at night (but he does this during the daytime as well), when we try to go to sleep after his walk. When we get home after the walk he starts to whine and cry out (very loudly) and shiver and he keeps it up for a long time. I've tried ignoring it and reinforcing positive behaviour but he keeps at it. He seems really spooked by something, but we can't figure out what it is. We didn't change anything in the house and there's been no loud noises at night, we live in a quiet neighbourhood and there's been no thunderstorms of any kind in the last week. Since the behaviour is new and only happens when we're in our home I'm at a complete loss at how to deal with this. For example: I take him with me to work to the office and he seems completely happy there, and never whines after he's been out for a walk, so that makes me think it's not a health issue.
Does anyone have any experience in dealing with this?