He's a 3 year old gelding. I've had him since he was born. He's very well trained (for his age anyway) and we get along pretty well. Of course he still acts up and doesn't want to do what I say, but overall he's good.
Last month I got a filly and of course I've been spending time working with her. I do all the same things I did with my colt and it just takes more time to desensitize, halter and lead break, etc. I still do spend time with my gelding and I try to make sure I see him before I go work with the bay and after. He always approaches me by smelling me and I really think he's smelling the baby and perhaps getting jealous.
The filly is in another pen and the gelding is in a five acre pasture. Now when I work with the gelding he's totally disrespectful. He snakes his neck and tries to get out of work, he doesn't really want to work with me and basically wants nothing to do with me. Tonight was the final straw that made me think it's jealousy, however, he actually snapped at me.
I really have no idea how to handle this. Spending more time with the gelding would be an obvious answer, but he's very difficult to spend time with right now with the way he's acting.
Has anyone had a jealous horse before? Will he just get over it or is this a serious problem? Is it even jealousy or some underlying problem?
For one, the weather has changed over the last few weeks. It's been almost constantly rainy and I know this has an effect on horses. And also around the same time I moved him from an acre pasture into a larger five acre pasture. Could I be misreading his behavior for jealousy? Or it a common thing for horses to be jealous? I don't want him to be upset, especially since part of the reason I got another horse was so that they could eventually be together and he wouldn't be alone.