__Dogs and their feces, which can spread disease, threaten such animals as the Pacific fisher, American marten and California wolverine ˜ all members of the weasel-ferret family ˜ and the Sierra Nevada red fox, Garcia said. "The problem is, we have some animals in our local national forest that are on the brink of extinction," he told supervisors. The southern Sierra foothills, including Sequoia National Forest and Tulare County's Balch Park east of Porterville, are traditional habitats for the threatened animals, he said. Garcia's group has members in Tulare, Kings and Kern counties. Currently, he said, Kings-Kaweah is the only Sierra Club chapter working on the hunting-law change.