When walking around my girls this morning, I noticed one of them urinating and it was dark yellow. Like the yellow in this :???. I have never saw it that dark before from any of the girls. Is this a problem? What would cause dark urine? She was bred July 3rd, so she would be "barely pregnant". I had read that mineral trouble could be to blame, but we provide free choice Bluebonnet Tech master complete for all our goats.