Thanks everyone...
I had received an e-mail this morning from a family that had adopted a sister and a brother from the same litter. She was signing them up for a puppy class and the trainer said she should rehome one of them because it was a recipe for disaster. They are 6 months and get along wonderfully. I hadn't heard of siblings being bad together ... so I turned to the forums
I appreciate the responses so much. I've shared with her your experiences and I know it has made her feel sooo much better.
Awww... I love seeing the pictures. They are all dolls.