Another Emmy, I've a 17 mo. old golden retriever who has a wiggly-waggly butt as well. She was purchased in PA by a couple with kids. It wouldn't surprise me if she was from a puppy mill. They kept her for 2 wks. When she and I met, she was a totally shut down, emaciated 8 mo old puppy with no, and I mean no, socialization. She needed a lot of love and encouragement to meet the totally new world. She couldn't go down corridors, and I could go on but, she's now a completely changed girl with excitement, joy, fun, and love to give. She's found her inner puppy that was never expressed before.