Last month my brother and I purchased two sixteen (around that age) year old mares. When we first brought them home we waited a few days to attempt to ride them; the only interactions with them were to feed them and groom them, which went surprisingly well for the most part.
I'm going to go over a few issues that I know need to be dealt with. First off, their hooves have not been trimmed in a long time (I'm guessing a year or two). I'm going to guess that their hooves are a few inches longer than they need to be and there are cracks throughout their hooves. I'm not sure how this affects a horse but I know it can't be good for them. Therefore, I plan to call a farrier (I think that's who trims them) to get their hooves trimmed and shoes put on.
The second thing I feel may be a problem is their teeth. The first time I put the bridle on my horse she didn't want the bit, but I was able to get her to take it after a few tries. However, that was the one and only time I was able to bridle her. Any other time after the first time has been a complete flop. She won't accept the bit and she'll do everything in her power to get away from it. She has broken two leads by putting all her weight against it and sitting down (on her butt). I am assuming she did it a second time (and almost a third time until I backed away) because she knew how to get away from it.
I think it could potentially be her teeth bothering her or perhaps it's simply because I am an inexperienced rider who has no idea what he's doing. But then again, I called my cousin over who has ridden horses all her life (along with her husband) and they were unable to get her to take a bit as well -- that's actually when she broke her first lead.
At this point I am unable to tie her up without her attempting to break away from the lead, even when I am grooming her. I'm honestly clueless as to why this is happening and what to do about it. She's a sweet mare... she's quite calm any other time. I just don't understand what's going on.
And on top of all this my girlfriend (who has ridden horses all her life) says she thinks she is pregnant (the horse, not my girlfriend, lol). She said that her stomach looks like she is pregnant. And I'll admit that her stomach does carry a little funny... at least, I've never seen a horse's stomach look the way mine does, but I'm no expert.
So I've got a lot of problems and I don't know what to do about any of them. Any help would be GREATLY appreciated.