Does your dog bark every time a man walks by? Do they shake or whine when a man approaches? Fear of men is a common phobia in dogs. We’ve heard many stories like this, in fact. Scout, a collie mix in Seattle, barks at the door no matter who’s coming up the stairs—but if it’s a woman opening the door, she stops barking and wags her tail. If it’s a man, she’s more likely to growl, back away, and keep her distance.