My 10 y/o QH gelding seems to be urinating more frequently while riding (I haven't paid attention to pasture behavior). I know this is a strange question, but I need to know if I should have him checked out. Typically, while on a 6-8 mile ride, he'll urinate once, if at all. The last couple of weeks, I've noticed that in the same distance he'll go as many as three times. I live in the middle of KS, and we are experiencing heat indexes of up to 110. I don't know if this factors in or not - I've not noticed any change in the habits of the other horses. Input please.