K-Fed may have physical custody of his children with Britney Spears, but People for the Ethical Treatment of Animals is urging Kevin Federline to take the custody battle to the doghouse. In a letter faxed to K-Fed, PETA President Ingrid Newkirk requested that he ask the judge for custody of the couple’s pets. “It’s no secret that Ms. Spears’ impetuous ‘pet’ purchases and lack of caretaking skills have been a serious concern of ours,” she wrote, noting that in 2006 the singer was “the overwhelming choice” for worst celebrity dog owner in polls conducted by New York Dog and Hollywood Dog magazines.

Newkirk was also concerned that Britney’s latest dog, London, was more of an “accessory” and noted that the Los Angeles chapter of the Society for the Prevention of Cruelty to Animals had already investigated the dog’s lack of veterinary care after breaking his leg when he was stepped on. “As a father, your main concern is the comfort and stability of your children,” Newkirk wrote. “London and the other animals whom the boys consider to be part of the family have provided that comfort and stability. Being separated from the animal friends whom they share a bond with is undoubtedly traumatic for them.”