Could this horse be pregnant?

Anything is possible and the only way to check is by vet as you're doing. The drinking and peeing thing suggests to me she has problems with her kidneys so I would ask the vet to do some blood work. If she has problems with her kidneys then she will have a lot of oedema (swelling due to fluid accumulation) in her legs, especially if she's stood in a stall.

What would be helpful for the vet is to measure how much she is drinking in 24 hours. Do this by starting with a completely empty bucket (make sure any automatic drinkers are shut off) and measure how much you put it and write it down. When you do the next water change you need to measure how much is left and write this down, measure how much you put in etc until you have the records for 24 hours and then work out how much she has actually drunk. The other thing would be to collect a pee sample from her for the vet as they will want to test for proteins etc. Use a clean bucket and sit in the stall till she pees and catch it then put a sample in a clean (boiled out) bottle. This will allow the vet to start investigating sooner. A problem with her kidneys sounds much more likely to me but if that is a problem then it doesn't exclude her being pregnant and that would certainly make any problems she has worse so have that checked. Good luck and let us know how she goes.

Some mares can get pregnant before they are 2 years old. I have seen fillys come into heat at 18 months of age. Many times if a mare does get bred at an early age her own growth may be stunted as her body will use up growing energy to protect and grow a foal. A colt that has descended testicles can breed as soon as he figures out what his purpose in life is and he finds a willing female. I have seen colts as young as 14 months trying to mount mares. If a colt is not breeding material he should be gelded as soon as your vet feels he should be. I keep my colts and fillys separate after they become a year old. I hope this is what you were wondering about.

You might have bought someone else's problems!! Get her out where she can walk around and the swelling may go down, a lot of horses will stock up when stalled up for long periods of time.

It is possible that she is pregnant, but that wouldn't be my first guess.

I would think that your horse's legs are stocked up from being stalled. She probably needs more exercise and turnout time. Is she being fed alfalfa or alfalfa based feed? Alfalfa can cause your horse to urinate excessively, even if they are used to it.

There is your answer of why it is so cheap... that horse has problems only money can fix.

There is nothing, however, thats saying once shes' cured, she won't be a happy healthy horse for the rest of her days.. just don't get her pregnant again prehaps??

There is no way your studying anything to do with horses - what your describing are 'human symptoms' ! swollen back legs - the horse has a serious issue and your friends just bought herself a serious vet bill ! all the peeing might occur in older mares in really really late pregnancy not early.

Well maybe she is not a stall horse...and she is stocking up from being in a stall... you need to take her out and walk and let her exercise.

hello vet bill. Even if she is prego she shouldn't have edema like that. Good Luck!

Is it possible that the horse is pregnant? Sure.

I think it far more likely that she has Cushing's disease.

yes.