Growling!!!
 

I need help I have a 2yr old yorkie, Keisha and a 6mth old named Jersey. Keisha has sort of accepted Jersey loves to play and run with her but when she is laying down, and Jersey wants to lay next to her she growls and snaps at her. She has started growling when anyone comes near her while she is laying down. I can sort of understand I say to the kids if she was a german shepard would you go and wake her and pick her up? But I do want some help so she doesn't bite which I think its leading up to, I do look her in the eye and roll her on her back and tell her no, then she's ok until next time.
Any suggestions!!

This seems to be fairly common with Yorkies, but you are right, you want to deal with it before it escalates. This is a form of resource guarding - I forget the name normally used - territory guarding or position guarding, something along those lines. There is an excellent book by Jean Donaldson that deals with all aspects of resource guarding called MINE! that would help you. Amazon carries it.

Good luck!

Not to over whelm you but as I am departing on a short break in about half hour. This is the faster way to get you info and as other have asked about my book list thought I just share it.
Here is my book list. yes all but the last one I have read.

Aggression In Dogs, Practical Management, Prevention & Behavior Modification by Brenda Aloff.Learning Theory, A Quick Course by Brenda Aloff.
An Overview of Dogs Signals and Aggression by Brenda Aloff.
Don’t Shoot The Dog by Karen Pryor.
On Talking Terms With Dogs: Calming Signals by Turid Rugaas.
Bones Would Rain from the Sky by Suzanne Clothier.
The Dog Whisperer by Paul Owens.
Click For Joy by Melissa Alexander.
Click to Calm by Emma Parsons.
Clicker Training for Dogs by Karen Pryor.
Fight by Jean Donaldson.
The Other end of the Leash by Patricia McConnell.
The Culture Clash by Jean Donaldson.
Dominance Theory and Dogs by James O’Heare.
Outwitting Dogs by Terry Ryan.
Clicker Training for Obedience by Morgan Spector.

The ones highlighted are for aggression and I would recommend the first one as it covers all forms not one at a time.
I am less sure it about resource guarding. If toys and food where involved it be resource but I am thinking it more the dominance aggression.
The old saying let sleeping dogs lay and I let her but also she needs to learn to accept a little more handleing and being disturbed with more grace and no growels.

Joy