“…Long term surveillance of non-domestic felids infected with FIV, as well as evidence from free-ranging populations of pumas ( Puma concolor ) and lions ( Panthera leo ), suggest that these viruses are ancient, host-adapted, and have little to no negative impact on life-history parameters such as longevity (Biek et al, 2006; Carpenter and O'Brien, 1995; Packer et al, 1999). However, a few clinical studies have revealed that individuals of these same species may demonstrate FIV-associated immune depletion and, in some cases, AIDS-like complications and death (Brennan et al, 2006; Brown et al, 2010; Bull et al, 2002; Bull et al, 2003; Roelke et al, 2009; Roelke et al, 2006). Data on life history and clinical parameters are rare, and seldom collected in the same population.…”