What does it mean when horses go nose to nose and one of them suddenly squeals and jumps or kicks?

It's their way of getting reacquainted.

Some horses just immediately take up where they let off then there's others who have to just get to know each other again.

I have two old geldings, Buddy and Grey who were separated for a while when I shipped Buddy up north to my best friend. When he came back home, it was old home week for the two of them. Yet, when my QH mare went out to be bred and came back home, both geldings who were pastured with her had to get used to her all over again.

Depending on if it's a mare or not a mare will do the squeal and kick thing when presented with another horse. Also your horse could have all kinds of new smells on him from where he came from. Some horses have a dominance thing and will squeal or kick when they smell a new horse and to all of them at that stable your horse is a new one. It's their way of talking sometimes they mean hey I'm bigger and meaner than you you're under me. A mare usually is saying stay away from me unless she's in standing heat then they have a little different squeal and will turn their back sides to the other horse. Once they are used to your horse they will all probably get along good. But to them ur horse is a new one even tho they say him a year ago.

When a horse is introduced to another horse and they are loose, they come up face to face and sniff each other. They can tell a lot about the health and history of each other this way. The next step is dominance- you will see either one horse pin their ears and make a move at the other, or both will paw and make noise when the dominance issue is unclear. It's a completely natural process of herd dynamics, of showing interest and communicating status via body language and sound. The nose to nose isn't meant to be cuddly like people, it's more of an exchange of medical records and business cards.

My old man used to get nose bleeds because he would fling his head up at the last second when the vet was taking the tube out (he colicked when I first got him, then he had a choking incident shortly before he died). I have also seen what you described when horses have cut the inside of their nose. Usually this is from getting a tree branch up the nose. I am not sure what a horse can do in his stall, but have known many magical horses that have found new, interesting and often undeterminable ways to injure themselves.

Its usually the bossier horses that do this, my boys a softy and has never done this but the dominent ones will squeal and usually the softer horse backs down (and in a field gets out of the way before the horse kicks him).

i just got a new gelding, and i already had a mare, so when he went up to her, they touched noses, and then she jumped up and sqealed, and kept doing that. and then a few year back, i had a stallion and a nother mare in the same field for a few years, and then all of the sudden they started doing this also. its there way of "flirting" or if the mare is in heat, and she gets close to a stallion OR gelding, she gets excited. some do it to get accainted with other horses:) of coarse i just got two new paint mare today, and they didnt do that. so i would say the mare might have been in heat, or they were just getting to know eachother agian:) its nothing to worrie about, just a horses way of communicating:)

btw, i loved th way how you said "i asked my horse and hes not talking" nice sense of humor:) i think i might use that. with ur permision of coarse:)

Ha Ha, don't you with they would speak english :)

They are establishing pecking order. If you watch them out in the pasture you will see the behavior until they figure out there place in the herd.

Just a note of wisdom, I would not put your horse nose to nose with another horse you are not familiar with that is a good way to get your arm broke. Plus you can pass illnesses that way.

Its fine, they're just getting to know each other. From what my horses have taught me, some (especially mares) are more 'vocal' than others but none of mine have ever actually ever done anything serious from this.

They are establishing (or, re-establishing) dominance, the snorting order. (chickens peck...)

Watch the rest of the body language, it's an education.

They are just getting to know each other! They are showing each other who is boss and letting each other know what the other is about again. Its perfectly normal horsey behavior and all of them do it. So just leave him to it!