Hopefully, some help can be given to the YT member of this puppy.
I went back and read her posts and unfortunately it sounds like this little guy is spending most of his time in that cage because he has a problem with biting!
I also see in another post she bought him with intention of breeding him with her Maltese!
As far as the biting, I think the dog is in need of training & socialization for sure! I'm not an expert, so I hope others can weigh in here!