Greetings
Bow + Head Tilt - His normal greeting, Nightmare rarely bows fully to anyone.
Completed Bow - Only done to those of whom he deems warrant such a graceful action from him.
Not Bowing - Unknown Deer, Not Sure of them, does not feel they warrant his attention.
Sniffing + Head Tilt - Getting to know the other Deer's scent, curious of. Not sure if he met them before.
Sniffing Repeatedly - Sizing up the other Deer, Wary of... possibly a sign of aggression or that he does not trust the other deer
Sniffing + Nod - Knows the other Deer, has met them on more than on occasion
Sniffing + Shaking Head - Does not know the other, does not like the other.
Sniffing + Taunt - Instant hatred, does not want to be near the other.

Affection
Single Nuzzle - Normal Affection, typically done after greeting someone he knows well.
Multiple Nuzzling - Affectionate, cares deeply for the other deer in which he is nuzzling.
Nuzzling + Excited - Nuzzling meant for Smaller Deer, typically done to reach down to others.
Nuzzling + Sad - Another nuzzling meant for smaller deer, often done to stags as well as a playful nudge.
Nuzzling + Bow - Another nuzzle meant for smaller deer, can often be done to others of the same height to give a hard chest nuzzle.
Side + Listening Quickly to shake head - A rather rough body nuzzle, done to close friends and stag friends.
Rearing + Nodding his head - Usually a series of friendly headbutts. Mostly done with stags he knows, will never do this to a doe.
Standing At the Side + Nodding - Nuzzling and Grooming another, licking at the other. Done to those he has high interest in.
Nodding + Shaking his Head - Rough nuzzles, grooming and licking. Usually done at the side of another deer.
Standing at Side and Looking over Shoulder - Guarding, Protective of, Grooming

Aggression and Fighting
Bellow + Taunt + Head Tilt - Spar with Me?
Taunt + Nod Head + Taunt - Spar with Me?
Bellow + Taunt + Nod Head - Spar Accepted
Taunt + Nod Head + Head Tilt - Spar Accepted?
Bellow + Taunt + Shake Head - Spar Not Accepted
Bellow + Taunt + Listen quickly to shake head - Back off and don't even try it...
Bellow + Taunting - A Warning, Saying to Stay away... does not wish to fight but will if he must.
Bellow + Lowering Antlers - Another Warning, if the other deer is too close it is meant to shove the other away.
Bellowing Alone - Roaring out at the other, displaying his fangs and jaws. Very aggressive action, meant to intimidate and threaten.
Taunt + Head Shake - Growling, Snapping his fangs, a display of Dominance.
Rearing + Taunt - Lunging up with his talons and then slamming his full weight down on his opponent.
Rearing + Pawing - Lunging up with his Talons and then lashing out repeatedly against his opponent.
Rearing + Bellow - Rearing up and letting out a roar to deafen and daze his opponent.
Sad + Lowering Antlers - Done when Opponent is rearing, attempting to put the tines of his skull into his opponents body.
Antlers + Gasping - A lung forward, attempting to grab the other in his jaws, often followed by Violent head shaking.
Lowering Antlers + Rearing - Lowering down and then lurching upwards to tangle his opponent with his tines and horns.
Rearing + Nodding - A series of Headbutts used to daze his opponent. Often done multiple times in order to cause serious damage in a more serious fight.
Rearing + Shaking his head - A Series of bites meant to tear into his opponent, often done at the chest or if he can get to it, the side.
Rearing + Bowing - Leaping up and coming down with his full weight or his head. Used to try and crush smaller Deer.
Rearing + Bowing + Antler - Lunging up, trying to crush another under his weight and skull. Gouging and Goring likely to happen.
Bowing + Rearing - Lowering down and lunging up in an attempt to gouge another in the chest or throat.
Moving Away Followed by Charging - Charging his opponent to use his size against them. Becoming a battering ram and bulldozer.
Anytime Nightmare Roars there is a chance that he is spewing out the Toxic Gases and smoke within his bowels and body.

Misc.

Scratching the Ground + Head Tilt - Typically done beside a Tree, Mushrooms or Sleeping deer. Asking if you require help (OOC)
Scratching the Ground + Head Tilt - Please Follow
Scratching the Ground + Nod - Lay with me please
Rearing + Nodding - Rather Excited, pleased
Nuzzle + Sad - Must Leave, is Leaving the Forest
Sad + Bowing - Must Leave, is Leaving the Forest
Rubbing Against a Tree - Relieving an Itch, removing Shedding fur, marking territory
Rearing + Lowering Antlers by a Tree - Hitting his head against the tree, attacking the tree
Rearing + Roaring by Tree - Relieving anger, attacking the tree
Standing over Another Deer - Extremely protective off, defensive, watchful and guarding
Antler + Gasping - When not in a fight this means that he is coughing violently. Coughing is generally done to show that he is coughing up blood or weakened.