I also have a 13wk old lab/aussi mix and he barks and whines at night in his crate. To go to the bathroom. . . to get out of the cage. . . either way he wants out. My other dog did this for a while too. But after a while she stopped. Once they are older they for one can hold there bathroom issues much better. I also think that once they grow up a bit they get "thicker skin" if you know what I mean. They cry because they are uncomfortable, scared, and probly miss you! I think that may wear off after some maturity. I give it a few minutes at night and if he doesnt stop a squirt him with water and give a firm no. That ussualy stops him. However at 6 am every morning my pup is awake and wants out!! Crying screaming whinning. . .ugh. But most of the time he has to go to the bathroom real bad. I havent figured that out yet. Im hoping he grows out of it.