Yes I have a 2 year old Newly Gelded horse, it has been 2 weeks, I now have learned it takes a month to be safe of him not being able to breed my mares. But what I am worried about is the aggression and the dominate behavior he is trying to take on. I have a 18 year old gelding that is the dominate Male up till now, but the little newly 2 year old and him got together and the 2 year old bit him hard on the neck, plus was charging him and chassing him, it seemed like for ever before the young horse let go of him, we got them separated and back in separate pastures now my poor older Gelding that was attacked by this little 2 year old that thinks he is still a stud is kind of scared now, I should say freaked out a little. Is this going to get better as the time go's on will the 2 year old calm down and stop acting so mean to wards him and trying to still his mares. I want them to be friends and be in the herd together, how do I do this.