You Can't Teach an Old Dog to Fly A woman called our airline customer-service desk asking if she could take her dog on board. ""Sure,"" I said, ""as long as you provide your own kennel."" I further explained that the kennel needed to be large enough for the dog to stand up, sit down, turn around, and roll over. The customer was flummoxed: ""I'll never be able to teach him all of that by tomorrow!""