Gross or merely disgusting?

[Christiaan]

This is a new one for me, so any feedback is appreciated. This morning I noticed my cow drinking her own urine. She is pregnant, about 4 months, and I am weaning her calf this week. Everything else is normal. Is this normal behavior? Does she have a deficiency of some sort? Is she a pervert?

[jerzeygurl]

does she have access to a salt block??

[francismilker]

I've never had it happen, but I've heard a cow will do this if they're in ketosis. (where they are spilling a lot of protein in their urine).