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 Animals of Farthing Wood (book) The Animals of Farthing Wood (book) The Animals of Farthing Wood is the first book of the Animals of Farthing Wood book series, which was later adapted into a TV series of the same name. It was first published in 1979. An abridged version of 70 pages, by the same author, was published in 1993 to accompany the TV series. The novel begins in the fictional Farthing Wood, which is being destroyed to make way for the building of human homes. The book follows the adventures of a group of animals who choose to leave their home in Farthing Wood