What is "big cat DNA"? Are there not multiple species of big cat? Can a DNA test not be more specific?
Edit: Answering my own question about the methods used: The story links to Robin Allaby's page [1] about his DNA test service. That page says he tests for "the Panthera, Puma and Lynx genera". An older story [2] describes Allaby's methods: 450 PCRs and ~600 sequence reactions. "The team searched for two gene targets each of deer and canid, but over 30 different cat gene targets."