I have a Chihuahua/Yorkie mix that is a little under a year old. I rescued him from a trailer house when he was 3 months old. We put him in a cage at night with our other dog. Lately he has been whining a lot starting around 4 am until he is let out. He has always been a whinny dog and I think it's because he wants attention. I have been following advice that I have read on the internet, like not giving him attention when he is whining and rewarding him when he is quiet. My husband and I live in an apartment and we are getting close to the point of having to get rid of him. He has only been whining in the mornings and does not whine when we leave him in his cage during the day. I'm willing to do whatever it takes to keep him. HELP!