I don't think you need a subscription to the Wall Street Journal to see these, but let me know if you do.
Pretty sure the article is free, too:
July 31, 2012, 8:09 p.m. ET
Prison's Guards Are Part Wolf, All Business
Bitten by Rising Cost of Human Guards, Louisiana Prison Deploys Canine Hybrids at Night; 'They're Going to Catch You'
By GARY FIELDS