Well, I'm not sure when the actually will show up, but I do know that most I've seen (and personally experianced) is that xrays are done about one week before or during the last week before the litter is due. That would be about day 56 or later. My female had xrays done about then and the 4 puppies' skeletons were clearly visible for us. Conditions of the xray machines and/or other factors also may also play a part in how clearly the xrays turn out though. |