Rod Ryan never thought he'd allow a dog in the house, but this week, he's got three dogs and a cat. Not to mention eight human visitors holed up in his four-bedroom home. Ryan, morning radio jock at KTBZ-FM (94.5) found common ground with untold numbers of Houstonians this week when he opened his home to friends from New Orleans. People donate money for disasters half a world away, but when it happens so close to home, the reaction is more intimate. Houston shares more than geography with New Orleans and Mississippi — family and religious ties, a love of...