We have just adopted a 5 week old puppy from a dog shelter . They couldn't stay in the shelter any longer and this is why we've got her while she is so young. I have had puppies before but 8-9 weeks and never had any issue with sepertion anxiety. My new little girl is obviously very young and crying all night for her siblings. I would normally let her cry it out but being so young I'm not sure this is the right path of action. Any advice for such a young girl. ? I don't want to get it wrong