I watched a show about this a while back on The Discovery Channel - I think? They were documenting the viability of large cats witnessed and photographed by people across the US. It was odd that the scientists said all of these sitings were false and that there a few cats left in isolated areas.
It made me very curious to what these people were actually witnessing...
http://www.smh.com.au/articles/2005/...180165887.html