We had an Angus heifer born 3/10/20 that we weaned 10/7/20. We run our bulls from late May to late November with our fall herd and the other six months with our spring herd. She had spent the winter on rented pasture without any bull in the pasture. When we got her and her herd mates moved home a couple of weeks ago, we noticed she looked a little "piggy". Yesterday she had a calf! I was under the impression that heifers didn't cycle until six months or older. She is only 13.5 months old. She delivered unassisted. The calf is small (thankfully) but nursing and doing well. Has this happened to anyone else? I hate to wean any younger than 6 months. I'm open to suggestions.