Here's another for ya'll. My 6yr old gelding that I've had for 11 months mounted my mare several times yesterday!! She did not mind and there were no altercations, but I am so curious as to why this is the first time he's ever done this. He has never shown any other signs of being proud cut either... he is the most easy going boy ever.

He may not be proud cut. Sometimes it's a way of showing domination. If the mare gets tired of it she'll let him know. You might keep watch for scrapes and tender spots as he might bump her or paw her while mounting. Mules can be bad about mounting mares. Some mules can run a harem but alas, no results.

My 19 year old gelding will mount anything in season. He is alpha in the herd dynamic...will herd the mare and circle her non stop keeping everyone else away. If allowed he would do this 24/7 and works himself into a hard sweat. He now is in a pasture with geldings only.

Are you one hundred percent sure that when they castrated him they took two testicles? Some times they have retained testicles a condition called called Cryptorchidism. Often they are mistaken for geldings since you can not see anything down there, but they can display stallion like tendancies, such as mounting. Often when they are castrated, whoever is doing the castration will look but if they can not locate the undecended testicle they will just not say anything. Some Cryptorchids can still impregnate a mare. They may or may not have an erection when they mount, it depends on the horse.

Interesting link

http://www.horsekeeping.com/horse_health_c...d_aftercare.htm

Thanks for the input. I'll get him checked but like I said, I'm more curious as to why he's just now doing this. I guess they've just become better friends. lol

As long as he remembers to tighten the cinch and mounts from the correct side...heck let him ride around and have some fun...

could also be that up till now he wasn't dominant enough in the herd structure to try to mount her and challange her authority.

It's just a blood test to check and see if he has a 'nut' hidden away for the winter.

LMAO!!

a lot of stallion characteristics are learned. I'd bet that he was run as a stallion for a while before gelded. With the vast majority of gelding being done now a days by DVM's, a proud cut horse is very rare. I can't remember the last time I saw a true "proud cut" horse.

The mare will get tired of it or go out of season and will "back" him off. AND it depends on the mare also. I've had good, true geldings, that I raised mount a specific mare. Not every mare, but just that one. I think it is a phermone thing that some mares are more stronger than others.