Spaying and neutering of dogs in Lodge Grass last year may have contributed to a surging cat population, the president of the Montana Spay/Neuter Task Force said. With fewer dogs to attack cats, felines here have been living longer and having more kittens, Jean Atthowe said. "We noticed we were very short on dogs ... and we had lots of outdoor cats," Atthowe said. At a recent clinic, 309 cats and dogs in Lodge Grass were spayed or neutered, at no charge. Sponsors of the three-day clinic were leaders of the tribe, the regional office of the Humane Society of the United States and the Montana Spay/Neuter Task Force.