Join Date: Aug 2009
Location: secret mountain valley
Try catching some of his urine in a very clean glass jar and dropping it off at your vet's for a urinalysis. If you can't get it to them immediately, store it in the fridge for no more than 12 hours before having it looked at. They may be able to tell you if there is a UTI or something more serious (stones, etc) without you having to bring him in. Some clinics will want to see the horse though. At any rate, it is a good first step and if you want to bring him in, try to bring some fresh urine along as well. A blocked or infected urinary tract is a serious problem.