It seems really strange ...sometimes when I'm walking my puppy, Pudges, he suddenly stop and refuse to follow me unless I drag him across the ground (which I usually don't). Sometimes, it's just because a stranger or some strange creature is walking by, he's usually friendly towards strangers in the daytime, or once we get close to them. But if it's dark or the strange person is in the distance, he goes on the alert and sometimes lets out a quiet, barely audible woof and sits and watches them carefully until he's either determined there not a threat or they've gone out of site. Since I've seen this I'm beggining to sense a protective trait in my puppy even though he's only 10 or so weeks old. But there are other times when I see absolutely nothing that he could be stopping for. As a matter of fact, recently he has been balking or absolutely refusing to leave the front yard at night. Granted, our neighborhood isn't the safest area in Columbus, it's actually a real low-income, trashy ghetto-like area, but for the few times I've walked out and about at night, everyone I've met mind's there own business. Tonight, though, I wanted to take him for walk but he absolutely refused to leave the front yard. He didn't even seem to be comfortable being out front and everytime I let his leash go slack he would strain as hard as he could to go back up the front door and try to get back in. I'm not sure why, until recently, he never really had a problem going out for a walk at night--he even ran away once and ran about the neighborhood! So anyways, to get to the point! Sometimes, I wonder if the reason he refuses to go somewhere is a rational fear that he tries to protect me from, perhaps some "Unseen Danger". Now this could mean it's a human or other creature that he feels is dangerous and senses there prescence when I can't ...because humans are blinder than bats in the dark.... or perhaps soemthing not so human. I've wonders if dogs could see things that are supernatural..or in some way completely invisible to the human eye. Anyways, I'm just interested in your opinoin on the subject. Why do you think my dog will randomly stop walking and refuse to go any further while he intently stares at a space of empty air? He is paranoid...or is seeing something that I can't? Also, what are you experience and opinions on dog behaviour that relates to this?