DALLAS (TNS) — Donna Rosen and her 6-year-old son, Braxton, may never know why their pet dachshund went missing for 13 months or what happened to him while he was gone. Those answers, if they ever come, will have to wait. Only one thing matters now. “Bobo is back!” Braxton proclaimed Monday as he watched his mother cradle the chestnut-colored dog in a park near their home.