What is going on?!?!

Took my mare out on a trail ride yesterday. At the begining she was fine as long as she was near or in sight of her pasture buddy. About 3/4 through the ride my mare lost sight of her buddy and started calling out. When we met up with the buddy mare, my mare started acting like a stud would when they would start walking up to mares. After someone asked me if my mare was a stud, I got really embarrased!

We got back to the trailers for lunch and stopped for 1 1/2 hours before we went out again. Where before my mare would just quietly walk past other horses, she started pinning her ears back at every horse. We got up at the top of a hill and when the buddy mare came around us, my mare pinned her ears back, showed her teeth and started to paw the ground and kinda screamed like (get away from me) as if a stud had approached her. (NOTE: there were no studs on this trail ride).

The saddle that I was using has showed no signs as to being an ill fit. This mare had been diagonsed as having a slight degree of rotation in the right front hoof and has soft soles as a result of a founder case. She is being treated as such and has showed no signs of swollen tendons or stiffness since we started treating her.

At the first trail ride and at home this mare has shown a kind eye and has been docile except for wanting to be with her pasture buddy. (WHICH THIS ATTACHMENT IS ABOUT TO DRIVE ME CRAZY).

I am at a point that I am getting tired of dealing with this behavior. As before she was by her self and was perfectly fine. But I want to be with other people and need a horse that gets along with others and has no attachment issues.

I am just sound paranoid, but I just wanted to bump this up.

In heat?

Second that. Sounds like she's in heat.

That is why I'm in love with my gelding

Sounds like she's in heat, some you'd never know it and others turn into squealy monsters

It was like it just happened over just a matter of minutes.

It could be. I second that she's in heat, too. Some animals it's like a day and night thing, others you'd never know.

There are some "moody mares" stuff on market you can give on such days. They calm them down.

On Monday night hubby brought home a horse we have at a friends house. He's never been on our property and was just gelded 4 months ago. Our 35 year old mare took one whiff of him and went nuts. She spent the rest of the evening trying to pee on his head!

Yes, but was she IN HEAT (in season)? It sounds like hormones to me. You might have your vet take blood and check her hormone levels, to see if anything is out of whack.

What is she eating? I know just about any kind of grain or feed makes my mare's hormones harder to deal with. Since switching to an all-forage/hay diet, she's a LOT easier to handle, even in season. I give her bermuda hay, some alfalfa pellets, a vitamin supplement, and some flax.