Thanks everyone!
Pam, I kind of thought he has Keeshond in him. Just look at the ears. As for Jake and the 'big dogs', Layla likes to play with him but she doesn't want to share anything. It's a bit nerve wracking as when she 'warns' him, she is so much bigger and could really hurt him. Lacey just goes with the flow but doesn't want him to bother her for right now.