Rearing on ground

Yeah, I know it was raised here before, but will still repeat...

Kiara does it out of excitement. Yes, I'm trying to keep her feet moving and all but she manages to do it even with the moving feet. She becomes SO excited sometime that she is all shaking and jumping and trying to run ahead and rears sometime. I tried to just lunge her to calm her down, but she keeps going and going and going and going and rears if you try to slow her down... I'm not sure why she's like that some days and it does look strange. Could it be deficit of something in diet may be? Is it anything can be done about it? Any suggestions (including the supplements) are welcome. I do give her half of the portion of Calm & Cool lately, but I don't like the presense of valerian root there frankly.

To me it sounds like she is on adrenaline (unconfident) and becomes impulsive. It doesn't sound like excitement to me. The fact that she rears tells me that it's her emotions running away and when you try to stop it in the front, she feels that 'wall' so the only other way she can go is up. Having a horse go in circle after circle is the worst thing you can do when they are in this frame of mind, it will just escalate the problem. You can do half circles (with your back to a fence) so that she has to constantly disengage her HQ's, thus helping kick in the 'thinking side' of her brain. Backing, going sideways, transitions every few strides are also great ways to get a horse thinking again.

Hmmm... That's a good suggestion. I'll try that. I was thinking about bending her and lower her head when she'll start to speed up too. Thanks, Spirit!

As for unconfident... It just doesn't look like that to me. She does it in field with my mare a lot too without any reason - all that sudden she takes off and running, running, running, rearing etc. Sometime she try to run and jump into the trailer when I lead her (and I stop that of course). And so on. It's not always, but on certain days, but I don't think it because of her cycle as it can be one time this week, and 3 times next week, and perfect horse the next-next week, and so on.

What and how much are you feeding her?

She gets the same (even little less) as my other mare (they are about the same age and she's taller):

Half-pound low-protein high-fat pellets + half-pound crimped oats + scoop of vit/min mix + handful of boss in morning and evening. They get hay and graze couple hours/day weather permitting (they have grass in field too, just not as lush).

I just wanted to rule out feed as a cause but that doesn't seem to be it.

Yes, I understood that.

Hmm, well if she isn't unconfident, which I don't know if she is or not because I'm not there to read her body language, then she certainly is on adrenaline. She sounds like a very sensitive horse which does play into this.

When you say she will try to jump into the trailer, what exactly do you mean?

Spirit, she's VERY sensitive. I had several trainers coming out and all said that. She looks like she has mood swings, but I just can't find any logic in it (it's certainly not very much in-heat - related). My vet also says that and he spends lots of time and patience on her.

By "run into trailer" I mean some days she start trotting as we approach it, so I have to turn her to make her walk slowly otherwise she tries to jump into it. Some other days she refuses to walk in right away, actually. Just never know... I work on loading her in trailer couple times a week at least, but still.

Because she is so sensitive, when you work her think about how LITTLE it takes to get her to do something. Even if we think we are being "quiet" in our cues, we still might be "shouting" for some horses. Think about how subtle you want your cue to be and start there.

Is there any reason why you couldn't let her load into the trailer when she wants to? Unless I'm missing something about this specific situation, I see no reason why you shouldn't allow her to get in if she wants to. That is the ideal situation after all, the horse WANTING to get in and being WILLING to get in.