How many days old does a calf have to be before you dont have to worry about them freezing them anymore. We have a calf that was born last friday that we kicked out of the barn this morning that now has frozen ears. We have been checking them every day since he was born and he hasnt had them til now. It got cold last night but he was inside the barn with mama and another heifer. I thought after the first couple of days you wouldnt have to worry about it but I guess not. Also is there any good tricks that anyone has on how to save ears that are already frozen or how to thaw them out and save them? Thanks, Chad.