Mad Dog Visits Lansing’s Potter Park ZooDavid "Mad Dog" DeMarcoDavid "Mad Dog" DeMarcoPublished: May 12, 2014Share on FacebookShare on TwitterLet's take a trip in the way-back machine.This is from 2010. I made a new friend at Potter Park Zoo.He reminds me of how I reacted when the Lions made their first pick Thursday night: "Who?"