Having just read “Hannah’s Dream” about an elephant that is rescued from a failing zoo, it was very timely and a great coincidence to see an “Amazing Animal” segment on Oprah today that was all about Tarra, a 35 year old Asian elephant and her faithful sidekick, Bella the dog who reside in an 1800 acre habitat in Hohenwald, Tennessee where sick and elderly female elephants are brought to retire.