Join Date: Jun 2010
Location: Alberta, Canada
Every mare is different, but yes they do experience "menstrual cycles" similar to women (though without the bleeding post ovulation), every 3 weeks apart from winter months.
Just like humans, the hormone changes will affect their moods differently from mare to mare.
Some mares become very flirty - calling and nickering to other horses or even people when in close contact. They may lift their tails repeatedly when you go behind or brush them, wink their vulva or squirt and be very spacey & distracted when working.
Others, like my mare, exhibit very few outward signs so it can be hard to track her cycle. She never talks, winks or squirts. The only time I know when she is in heat is when I am riding her regularly. During her heat she becomes a little more cantankerous and emotionally sensitive than usual, often getting saucy when I ask her to do certain things or becoming over dramatic, goofy and upset at little corrections lol
Some mares, like a friend of mine owns, become quite stud like when in heat. She would become very dominant, flirty and would even try to mount people. She also became an emotional wreck when being ridden which eventually got to be such a hassle that my friend had her spayed last summer.
"If a horse fails to do something that is because he was not trained to do it. If a horse fails to do something properly that is because he was not trained properly."