Serval along with the caracal and the African golden cat, forms one of the eight lineages of Felidae. According to a 2006 genetic study, the "Caracal" lineage came into existence 8.5 mya, and the ancestor of this lineage arrived in Africa 8.5–5.6 mya. The phylogenetic relationships of the serval are as follows: The name "Leptailurus" may have been constructed from the medieval Greek λεπταλέος or λεπτός meaning "fine, delicate". The name "serval" could have been derived from the Medieval Latin words "Lupus cervalis" ("deer-like wolf") or from its Portuguese equivalent "lobo-cerval" (referring to the Iberian lynx). The first recorded use of
What Is and What Should Never Be (Supernatural) What Is and What Should Never Be (Supernatural) "What Is and What Should Never Be" is the twentieth episode of the paranormal drama television series "Supernatural"s second season. It was first broadcast on May 3, 2007 on The CW. The narrative follows series protagonist Dean Winchester (Jensen Ackles) who finds himself in an alternate reality after a confrontation with a djinn . The creature appears to have fulfilled Dean's greatest wish: that his mother had not been killed when he was a child. Dean is happy in the new world until it becomes apparent that his previous work as a