A few yards away on the damp lawn, six-year-old Fiona was racing in wild, giggling circles with Barnaby, the golden retriever puppy we had brought home six months after the trial. Her older sisters, fourteen-year-old Hazel and twelve-year-old Kelly, sat on the porch steps nearby—Hazel sketching in a charcoal pad while Kelly patiently tied Fiona’s stray shoe laces whenever the little girl zoomed past.