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mare exhibits dangerous behavior

This category is to be used for general mare questions that are not covered by other category descriptions.

Moderator: Jos

mare exhibits dangerous behavior

Postby Destin » Thu Jun 25, 2015 1:40 am

My mare started exhibiting unusually strong seasonal behavior starting in January. She shows very strong heat cycles combined with moodiness, separation anxiety, and in the past months has started rearing when separated. She also tries to drag you to other horses so she can strike or kick at them except for my friends gelding she loves.

She wants to kill the new gelding I got this weekend. She tried to kick down the fence to get to him. My other mare has to stay with in ten feet of her. She will not let my other mare near the gelding at all. She gets between them and tries to go after the gelding or body blocks my old mare. I tried turning her out in the field tonight. She ran straight to the gelding s paddock and double barreled the gate. Poor boy is terrified.

I was convinced she had a Granulosa theca cell tumor but the vet says she just has multiple follicles developing on the right ovary based on ultrasound and that we should try regumate.

Ive had this mare since she was a foal. She is ten now. Why the sudden and extreme personality change? It is like owning a completely different horse!

She now tries to kill herself if you try to separate her from her buddy mare. She can't concentrate when in season. She stops to stare and no amount of kicking will get her attention. You have to whip her to make her move. She rears if you try to separate, breaks ties.

I have to put a stud shank on her and carry a whip. She is so distracted by other horses that she walks all over you. I practically have to beat on her just to walk by a strange horse. As she tries to drag you to them, squeal and strike or kick out.

I'm afraid she will hurt herself or me.

Could this still be a tumor and the vet is wrong? Or is she just having an extremely rough spring with her hormones going wild? Could her having multiple follicles be causing an issue?

Prior to this year she was a steady eddy. The only sign she was seasonal was tail flagging while being groomed. She used to ride like a dream.

Right now she is out of season and wants to kill that new gelding. He is very submissive. Her reaction seems rather extreme as he is absolutely no threat.
Destin
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Re: mare exhibits dangerous behavior

Postby Jos » Mon Jun 29, 2015 11:08 am

GCT's typically manifest with distinct ovarian enlargement and lack of follicular activity. It is therefore unlikely given the cyclical aspect and follicular presence of your mare that it is a GCT. You can however ask you veterinarian to perform assays for testosterone, inhibin and anti-Müllerian hormone.

In case you have not come across it, we have an article about granulosa cell tumours to be found by following that link.
We're always happy to try and help, but don't forget to check the articles section
of the website too, which has a search engine to help you look for answers!
:)
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Jos
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