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 necessary to maintain animals' health and strength, pay for veterinary care in times of illness and injury, or give their animals time for rest and recuperation." The group, which began its work in 2011, "has worked to ensure that over 7,000 bullocks primarily employed in Maharashtra's sugar factories were replaced by mini-tractors." In February 1995, a parody website calling itself "People Eating Tasty Animals" registered the domain name "peta.org". PETA sued, claiming trademark violation, and won the suit in 2001; the domain is currently owned by PETA. While still engaged in legal proceedings over "peta.org", PETA themselves registered the domains