Hi. I don’t think it will be a problem for him to leave him alone, but because that dog is bigger and needs a lot of space. It is my opinion that I would not keep a dog in a place like this. : / Don't be mad, but I can't understand it somehow. I believe those people want it for themselves, but ... I personally would consider it an evil on my part if I did that because I'm sorry. : / But don't really be angry, that's not why I wrote you to get angry. If you’re just worried about it because you leave it alone, I don’t think you need to. :)