I have 2 nubien does (Lo and Mocha) and Mocha had 2 kids and when I found them ( hour or two after birth) they were dead . Not sure if stillborn or she didn't get the sack off . The other doe had twins as well and they are doing fine . Both are first time moms. Lo's bag seems knotty and hard all the time and I t seems that the kids have a hard time getting milk. They drink very frequently for very short periods although LO doesn't let them drink long before she walks away. Mocha is in the same pen and I have noticed the kids also drinking off of her periodically since she still has lots of milk since we have been milking her. Is this normal For kids to drink off two moms?