Cougar Mountain Zoo 2009, Peter Rittler continued in the zoo's management. The zoo collection features 32 exhibits of animal habitats concentrating on endangered species such as tigers, lemurs, wolves, reindeer, cranes, wallabies, macaws, and cougars, among others. On June 16, 2007, the zoo acquired two male Bengal tiger cubs, a royal white and a golden, who were born eight weeks apart in a Florida tiger preserve. The zoo added an additional two cubs in 2009. A glass-walled tunnel called the "Tiger Tunnel" enables visitors to view tigers in close proximity. In 2011, a 370-pound (168 km) tiger was photographed holding his paw up
Hip replacement or to erode the acetabulum. Hip resurfacing is an alternative to hip replacement surgery. It has been used in Europe for over seventeen years and become a common procedure. Health-related quality of life measures are markedly improved and patient satisfaction is favorable after hip resurfacing arthroplasty. The minimally invasive hip resurfacing procedure is a further refinement to hip resurfacing. Current alternatives also include viscosupplementation, or the injection of artificial lubricants into the joint. Use of these medications in the hip is off label. The cost of treatment is typically not covered by health insurance organizations. Some believe that the future