Lots of good advice above. On the Transam I met a guy who had had a boxing match with a racoon inside his tent, it had torn through the wall, but saw nothing myself besides dogs in KY. They can be a pest. I carry Halt
spray available in bike shops over here and the couple of times I've used it it worked. At Grand Teton I was urged to put anything with a scent including toothpaste in a bear box.
As others have said the biggest danger is traffic especially those trailer things that fit on pickups. They are often driven by an ancient who only takes it out once a year and has no idea how wide it is. In general huge trucks are considerate of cyclists often going completely to the wrong side of the road to overtake you. They are driven by professionals with little interest in the hassle of hitting a cyclist is my opinion.