There are may ways in which a person might choose to travel. Many people like to travel by boat or by plane for example.
walking
Depends on the location, but I personally prefer car
Rats are social animals and typically prefer to live and travel in groups rather than alone.
afraid to fly
tourists are usually on vacation and want to be lazy and not drive
Scared of heights
There is only one way to travel to south America from other countries, that is Flight. Generally, people prefer cheap flights to travel South America.
Because pigs are intelligent animals and prefer to travel by sea.
Your answer depends on where you start, and the mode of transit you prefer.
Most people prefer to travel by airplane, because it is the fastest way to a place, but if someone is airsick, or afraid of height, they might prefer a more ground level technique such as driving, or, if crossing an ocean, a ship.
Dogs generally prefer familiar dishes and objects. They will adapt, however, to eating and drinking out of unfamiliar bowls when they travel with you.
Yes. Personally, I prefer it that way. Driving at night is really boring.