Thank you for your comments and for giving me the opportunity to hear your suggestions.

To help answer questions,

1. the pup is not from an abusive home, he was raised with his parents and brother.
2. This morning I did a little bit of training to help alleve his nerves, he was good, he sat, stayed, jumped, layed.. etc.. but, when I leave the room and come back he still shakes and seeks comfort in his crate.
3. I will do the treat thing so that he stays calm.

I will continue to work with him so that he will slowly grow out of it. Thank you for opening my mind and helping me.