Great thread !
Here's my spooky experience. Have posted about it on MN before(different user name).
Before having my DD (now 8) me and my now ex DP went on a holiday to a south west England caravan site. We rented a mobile home for our week away and because it allowed dogs took our german shepard with us.
It wasn't like a Haven park with lots of things to do but as it was a dog friendly park they had a 'dog walking field' which was basically a section of the site that was fenced up. The site was planted on the top of cliffs which looked over the sea and the dog walking field was on the edge/top of said cliffs and had a small forest on one side.
One evening(early in the morning) me and ex DP couldn't sleep. Our dog was restless so we decided to take him for a walk in the dog walking field . Rules as they were in the park meant we had to keep him on led whilst walking through the caravan section but when we got to the field we could let him off. Obviously it was very dark, except for the bright moon in the sky, but nothing was off, just a normal eve. We opened the gate, let him off lead and he did his usual thing of mooching about and sniffing this and that.
Suddenly, he stops mid mooching about, and stays completely still, ears up and his hair goes all big ( if you haven't had a pet, cant really explain it but I have had dogs and cats and they sort of fluff up their fur to look bigger when in a fight etc)
He starts growling really low and shaking. Me and the ex look at him , thinking WTF ? He doesn't act like this. But our dog still keeps low growling , his eyes fixated on the same spot. Ex DP and me follow our dogs gaze and see in the shadows a (what I can only explain) as a massive dog out line , much bigger than a german shepard stalking the area, like herding, circling us getting nearer and nearer, the thing that freaked me out was it was moving like a dog but it wasn't, it kind of creeped like you would expected a human to do, carefully , considered, a bit like cartoon cartoon baddies creep. It got closer and closer. By this time me, the ex and our dog wanted to get out there and started running, it followed us, racing after us so we could hear its paws hitting the ground. We didn't look back and kept running. The scariest thing was suddenly the noise changed from a running animal noise to a definite two footed noise, like a person running after us. We srambled into the caravan with our dog whimpering and shaking. Me and my ex DP have not talked about that night ever since. Too scary.