Here?s a safety tip? Bring two leashes. That way you?ll have a spare when you misplace one. Your dog MUST be on a leash whenever you are in unfamiliar surroundings. All it takes is a split second for a disaster to start its fateful chain of events. There are hundreds of reasons why your dog has to be on a leash whenever you are not in your own back yard. Travel crates, human versions of dens, make great containment devices and many dogs enjoy hiding out in them while traveling; bring one if your dog likes the security of a crate.