I figured it's time to throw some fuel on the nightmare fire

This is nightmare fuel? Pretty sad attempt.

Hay I have seen weaker

And it's also the legend behind the black dog that makes this nightmare_fuel

The he black dog is an omen of death it is said that it is commonly seen by tired drivers who push them selves to the limit and if you see the black dog its time to park because someone is about to be killed if you keep going I have seen the black dog personally I almost wracked a semi because of it. It runs right in front of you its about the size of a black bear after I got stopped I asked if anyone else saw it and thy said nothing was there. I am not making this up the black dog is real legend is real

suzukiman1990 said:
The he black dog is an omen of death it is said that it is commonly seen by tired drivers who push them selves to the limit and if you see the black dog its time to park because someone is about to be killed if you keep going I have seen the black dog personally I almost wracked a semi because of it. It runs right in front of you its about the size of a black bear after I got stopped I asked if anyone else saw it and thy said nothing was there. I am not making this up the black dog is real legend is real

I saw this in a movie... but i can't remember wich one.

Movie is called black dog good movie but like I said if you are pushing your self to hard and you get to tired it is real I have really seen it ask any questions veteran truck driver who has been out here long enough that will tell you all about it

DOGIE

Lame

This looks like the Moddey Dhoo. Which is, basically, the Black Dog.

Can't find anything about it appearing to people about to fall asleep at the wheel, though.

Not necessarily falling asleep but just pushing themselves to hard I have found a very limited info on Google

evellon said:
I saw this in a movie... but i can't remember wich one.

It was in the 1998 Patrick Swayze movie, Black Dog.