Last year, one of my Longhorn cows gave birth to twin bull calves.. ok so that is not so interesting. but the fact that they were born 3 days apart is. Both heatlhy, both weaned out at a nice weight (about 500#) and she bred back in no time. My vet said impossible, she stole some other cow's calf. But the only cow that was ready to calve had hers a week later. These two bull calves were identical, except one had a tan nose, the other one black. Anyone ever have this happen?