I have a first calf heifer that is not due till end of January but noticed today that she is not eating but all she wants to do is lick on the everything. Whether it is the gates, woven wire fence, wood post it doesn't matter. They have had 12% mineral tubs in the lot but ran out the other day and waiting for the feed store to get more in. I have been hand feeding them hay so they wouldn't get too fat to calve and I even tried giving her some grain and she just picked at it a little bit and then would rather chew and lick on the feed trough rather than eat. Any ideas what it could be or is it just some signs of her possibly calving early. Thanks!