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
Eurogroup for Animals of Animals, which meets at the European Parliament in Strasbourg once a month. Eurogroup for Animals also works closely together with retailers to encourage them to adopt higher standards of animal welfare. In addition they campaign to improve the situation of farm animals, research animals, and wild animals. In 2008, the group led a campaign to prevent cloning for food being approved in the European Union British animal welfare organisation RSPCA took the initiative to set up Eurogroup for Animals after noticing more and more legislation relating to animals was being decided at a European level. Thus in 1980 Eurogroup