Bill our Gelding

Hello, we adopted our first horse in March, she is a rescue horse. We rescued her from a flood, she is doing great. A Few weeks ago we bought a horse, a gelding, his name is Bill, and he is a sweetheart. Today my husband and I noticed when he urinated he let out a low groan sound, and my husband thinks he has an odor to his urine. The groan sound he made was very loud. I couldnt detect any odor from the urine. Does anyone have any idea what this could be, any info apprecitated. :)

most horses will groan near the end of urinating as a sign of content. as for the oder is bill getting enough water???, has he been seen by a vet?

Yes he has 2 containers of water, I am going to call the vet in the morning, it was to late to call when this happened. He groaned from the time he started urinating till he stopped. He is eating well and drinking, if there is something wrong with him it just started today. He has been hateful with the mare, her name is Sugar, for a couple of day s too, but we were told this will happen, when we first got Bill she was snappy with him. Your info is appreciated. :)

Talked with the vet this morning and he said he was going to give Bill some antibiotics just to be on the safe side, Mac is gone now to pick them up, he is still eating and drinking like he should. The vet said it may not be anything.