I have a puppy that will be 2 weeks old 2-18-15 he a Chihuahua mix. He was one of 3 puppies 2 which died at birth. The mother dog has nothing to do with him since birth I have bottle fed him from day one. He has been doing great eating good using bathroom like he should till today, he whining alot not eating and body kinda limp feeling!!!! What's wrong with my baby I have grown very attached to him very attached someone please help!!!