The Manhattan custody battle over a miniature dachshund named Joey will finally give Fido proper weight on the scales of justice, experts predict.  “We’re seeing a shift in the law,” said Stacy Wolf, an attorney with the American Society for the Prevention of Cruelty to Animals.  “We’re very heartened and happy to see a judge considering the emotional connection between humans and their animals as relevant to custody,” Wolf added.  Family law attorney Sherri Donovan who represents one of the spouses fighting for sole residential custody of Joey said last month’s landmark decision by Justice Matthew Cooper establishes “a whole new status for animals.”