A similar topic came up in 2011, when a representative of the Caters News Agency asked the website "Techdirt" to take down a photo that it had licensed from nature photographer David Slater. The image—a self-portrait taken by a wild monkey using Slater's camera, had been used to illustrate a post questioning whether Slater could even hold any copyright interest in the image. Slater argued that he had copyright interest in the photo because he had "engineered" the shot, and that "it was artistry and idea to leave them to play with the camera and it was all in my eyesight. I knew the monkeys were very likely to do this and I predicted it. I knew there was a chance of a photo being taken." Aurelia J. Schultz disputed Slater's claims, noting a monkey would be incapable of holding a copyright in Indonesia (where the photo was taken), the United Kingdom, or the United States, because it is not a legal "person". In December 2014, the United States Copyright Office issued an opinion backing the argument, stating that works by animals cannot be copyrighted, because they were not a work of authorship by a human. Nonetheless, the animal rights group PETA sued Slater on behalf of the monkey under the next friend principle.