Phobias are strange things. Most of us have them to some degree. I myself have a pronounced fear of heights. Some call it a phobia, which implies an irrational fear, but I'd call it common sense fear of bodily injury due to falling from a great distance.
Dogs are similar in this regard. But our two girls, Sadie and Ella, couldn't be more different when it comes to weather conditions for instance. Ella shows a total disregard for thunder and lightning, whereas Sadie goes to her "safe spot" behind our couch and will wait out the duration of the storm, sometimes trembling at an especially loud crack of thunder. She's gotten a bit better as time goes by, but no amount of petting and soothing talk will completely dispel her fear. And according to canine psychologists, by overcoddling her, I may have only been rewarding and reinforcing her fearful behavior. Oops.
After 13 summers of occasional loud & violent storms without incident, any intelligent animal should realize thunder & lightning are a natural occurance and nothing to fear, right? Then again, lightning strikes DO account for around 50 deaths and 300 injuries on average annually in the U.S. alone, so maybe her fears aren't totally irrational. Ella, on the other hand, has no qualms whatsoever about going out in the middle of a loud thunderstorm. So who is the smarter dog? The one who blissfully ignores the forces beyond her control? Or the one who spots potential danger and avoids it at all costs?