In addition to lots of pictures from my two visits to GaiaZoo in 2015 (May 2nd and August 7th), I'm also adding a couple of historical shots from previous visits, which I think are helpful for my descriptions of the current situation.
GaiaZoo kept wild boars between it's opening in 2005 and 2010 or 2011. Their exhibit was replaced by the GaiArenA, an arena used for shows with birds of prey done by, I believe, an independent and hired falconer.