Felis; genus Felis (type genus of the Felidae: true cats and most wildcats). genus Lynx (lynxes). big cat; cat (any of several large cats typically able to roar and living in the wild). genus Panthera; Panthera (lions; leopards; snow leopards; jaguars; tigers; cheetahs; saber-toothed tigers).
A typical open heart surgery takes anywhere from four to eight hours depending on the procedure. This includes preparatory time, time to prepare arter A typical open heart surgery takes anywhere from four to eight hours depending on the procedure.
1 In 2009, the average waiting time for a donor heart for a SynCardia Total Artificial Heart patient in the U.S. was 144 days.  About 3,100 people in the United States are on the waiting list for a heart transplant on any given day. Only 2,200 donor hearts are available each year.