Filly Mounting Other Equines? - The Horse Forum
  • 2 Post By Mulefeather
  • 1 Post By Rain Shadow
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post #1 of 4 Old 06-19-2016, 11:32 PM Thread Starter
Green Broke
Join Date: Feb 2012
Location: Alberta, Canada
Posts: 3,053
• Horses: 3
Filly Mounting Other Equines?

Disclaimer: not my horse. Will likely be headed for a vet work up asap.

This is a rather strange case. I've known this filly since she was 3 months. She's now 3 years old. Sensitive temperament. This spring she came REALLY into heat and hasn't been out of heat consistently since. She will do nearly anything to get to the stallion, even though she is pastured away from him. It was unusual, but she's young and the weather has been strange, so they let it slide. But it's not getting better. In the last week she's been seen mounting other horses. Today is was a gelded male mule. Other than being a stereo typical mare in heat around other horses she seems fine.

I recommended she get a full check asap. I've seen mares that act like stallions before, due to hormone imbalances, but not quite like this.

Anyone seen anything like this?
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post #2 of 4 Old 06-19-2016, 11:40 PM
Green Broke
Join Date: Feb 2014
Location: Harrisburg, PA
Posts: 2,664
• Horses: 1
It could be an ovarian tumor or cyst. That can be a major reason of mares acting studdish- the fact that she's not having a normal heat cycle is the big tip-off for me in that situation. I would encourage the owners to spring for an ultrasound of her ovaries to check.
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Mulefeather is offline  
post #3 of 4 Old 06-19-2016, 11:49 PM
Join Date: May 2014
Location: Florida
Posts: 1,812
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I've heard of it in hermaphrodites. I wonder if she's got some testicles up in there.
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Rain Shadow is offline  
post #4 of 4 Old 06-20-2016, 12:58 AM
Join Date: Jun 2011
Location: Canada
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I'd have her hormones checked had a mare that would mount other horses & flirt when she was in her first trimester of pregnancy. Was normal acting rest of time, so something with her hormones seemed to be cause at least we knew she was in foal...

There are Horse Crazy People,then there is Crazy People with horses...Know the Difference !!
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