Nightmare - Terrifying Bed-Time-Stories

How many of you have seen a frightening nightmare? One that will wake you up in anguish, heavy breathing, rapid beating heart and so on? Do you recall that dream, even if you had experienced it years ago?
I once though that that kind of reaction existed only in movies. I had experienced terrifying dreams and still do, but never managed to wake me up, so much for heavy breathing, and the ones I could remember were practically a remake of past experiences, usually ones that exited me, in the negative way. I had my share of hideous monsters, with claws as big as my fingers, etc, running after me, to end my life by strangling me, but it was the sheets that tangled around my neck that was threatening my well being. Experiences of falling, after the first 50 I got used of them and realized that it is a reaction to the relaxation of the muscles, or falling from the bed, for various reasons!!! And other ones too common also.
But...
It was years ago that I got that weird dream, one that when I describe it to other people they find it quite weird but not at all frightening, that got me full awake, standing on my bed sweating heavy breathing, a dream that the reminding of it kept me awake. For no apparent reasons.
Since it has been more than a decade I cannot recollect if I was drinking that night, had an overwhelming dinner, a rough day or any other experience that could produce such a nightmare. When I was a little boy no nightmare could mess up with my sleep, even when watching those Friday night horror movies.
Also, from what I am reading it's stated that our dreams lack of colors, all we see is shades of gray.
But...
I recall red in my sleep, if that is possible. The only color that dominated the dream.
It started as a journey into a forest, a person (that one should be me) dressed in red holding a messengers-bag, accompanied by my huge-ugly-drooling BUT trusted friend the Bear, he looks more than a vigilant than a good person, but in the story he is a good person, or so I believe!!! We are hight-spirited, singing as we walk and so on. Times goes by, if time exists in dreams at all, when we stumble across the Wolf.
Now that one is familiar, it cries out for Little Red Riding Hood.
So the Wolf character steps in front of me blocking my way. He is one great gentlemen, all suited up, nice talking and so on, but his honey-dripping talk is threatening in some manner. I cannot make out what he is saying, but his chattering implies of danger.
The Bear enters in front of me blocking the wolf from coming closer and gets scary, his foolish attitude is gone and now by looking straight at the eyes of the Wolf he warns him to withdraw and let me be. The warning, although I cannot here it, is starting to develop an atmosphere of anxiety, the forthcoming event seems appalling. The Wolf with all his sweet talk he backs-off and disappears into the bushes.
In a few moments our spirit is restored and we continue to fool around, the Bear has transformed again to that hideous creature but a fool one, more innocent than a infant. But the Wolf never give up. He reappears in front of starting his sweet-talk (you know like those salesmen that get really kind and gentle, not because they truly are, rather cause that it is the only way to approach the customer and "force" him to consume). The Bear transforms once more, blocks his way and for a second time he warns him to stay away. He also warns him of not trying to approach me for a third time cause the Bear will be different and not so soft on the Wolf. And again by the implication of the warning the atmosphere changes.
So for a second time we continue our carefree walk as if nothing has happened.
But...
The Wolf appears for a third time trying once more his sweet-talk on me...
...
...the Wolf was informed but he ignored the warnings of the Bear, as if the Wolf was looking forward for the Bear to do what he was about to do. As if I was insignificant in that play and the only thing that matters was the Bear's reaction.
The Bear transforms once more, but this time in something different, there is no shape, it is peculiar but still not frightening. It seems that the Bear engulfs the Wolf...
...before the Bear with enormous fists start pounding hard the Wolf. The Wolf isn't even trying to defend himself, only stares in apathy those fists hitting him hard...
...there is nothing supernatural about it, is real, it feels as a street fight, but only one part of the contestants fights, it is RAW, bones against meat...
...and then...
...then once more color, red splatters everything... slowly starts to accumulate...I try to stop the Bear from harming the Wolf...the Bear ignores me...
...red...
...and I'm awake, bathing in my own sweat, heavy-speeding-breathing, heart pounding-like-a-sledge-hammer, the taste of the dream still in my mind.
I never could figure out what was about this dream that frightened me so much.
Since then I never had a similar dream. Real life is still more terrifying than any fictional monster...