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
The Davinci Foundation for Animals major health concerns and overcame challenging health issues, to become the inspiration for a foundation that bears his namesake. Dedicated to animal advocacy, the focus of the DaVinci Foundation for Animals is to: In their first year, the DFA achieved much recognition among animal welfare groups, making a significant difference in many of the animals lives in and around the Foundations local city of Detroit Michigan. Though the support of sponsors and partners the foundation deducted staggering numbers through their spay/ neuter programs, to assist in the attempt to eliminate the overpopulation of unwanted companion animals and though assistance programs