It's easy to shrug off bus travel when you can fly, take trains or rent cars, but bus travel almost always has one distinct advantage: It's dirt cheap. If you're travelling to the UK any time soon, check out their bus routes. You can see a sizeable portion of the country for less than $US90 ($117) (not including airfare and lodging).

Not everyone who owns a dog has a car -- or access to ride-sharing -- to get their pup around, so they turn to busses and trains. If you find yourself considering public transportation to get your dog someplace, here's how to do so safely.