I adopted a rescue dog 6 weeks ago, I'm working on a couple of issues but overall he's the loveliest dog you could imagine. Up until last week I hadn't left him on his own but I needed to go out for an hour so I asked my neighbour if she would sit with him while I went, my dog has met my neighbour several times and will sit with her and be stroked when she comes round, however when I went out last week she said he started barking and howling as soon as I'd gone and didn't stop until her husband came round with their dog and they played together.
I think he lived with another dog in his previous home and he lived with other dogs in his foster home so he has no experience of being alone.
I've started to go out of the door and leave him alone for a few seconds at a time and am hoping to slowly build up the time and sometimes I go out of one door and back in the other so he doesn't associate me leaving through the same door, I leave an old t shirt with my smell on it and he has his comfy bed but I have another appointment next week so will have to leave him again for around an hour.
Any advice would be appreciated.