Felidae Oligocene, about 25 million years ago, with the appearance of "Proailurus" and "Pseudaelurus". The latter species complex was ancestral to two main lines of felids, the cats in the extant subfamilies and a third major group of extinct cats, which are assigned to the subfamily Machairodontinae. The machairodonts included the saber-toothed cats such as the "Smilodon". The "false sabre toothed cats", the Barbourofelidae and Nimravidae, are not true cats, but are closely related and together with Felidae and other cat-like carnivores (hyaenas, viverrids and mongooses) make up the feliform carnivores. Results of mitochondrial analysis indicates that all the Felidae descended
People for the Ethical Treatment of Animals v. Doughney People for the Ethical Treatment of Animals v. Doughney People for the Ethical Treatment of Animals v. Doughney, 263 F.3d 359 (4th Cir. 2001), was an important Internet domain trademark infringement decision by the United States Court of Appeals for the Fourth Circuit. Michael Doughney registered the domain name peta.org in 1995 and created a website called "People Eating Tasty Animals". The site described itself as "a resource for those who enjoy eating meat, wearing fur and leather, hunting, and the fruits of scientific research". People for the Ethical Treatment of Animals (PETA) sued Doughney, alleging trademark infringement, trademark dilution,