Apparently, Kevin Federline wasn't the only warm-blooded being Britney Spears ousted from her home this year. Once the proud owner of pampered pooches Bit-Bit, Lacy and Lucky, Spears ended the year dog-less, a feat that earned her the title of World's Worst Celebrity Dog Owner in an online poll of readers of Hollywood Dog and New York Dog magazines. "Britney was the overwhelming choice," editor Hilary O'Hagan said in a statement. "She once had three Chihuahuas and never left home without at least one of them on her arm. As soon as she met K-Fed and had kids, they disappeared."...