Thousands of sheep pass through Australian saleyards every week. Most are waiting to be purchased for slaughter. Pens are crammed full of sheep who are commonly injured or sick. Whilst it is not illegal to transport pregnant ewes, those seen to be pregnant are not supposed to be transported. Yet it is not uncommon for lambs to be born at saleyards. There is no legal requirement for any sort of shelter at saleyards so sheep are often exposed to the extremes of weather conditions experienced in Australia.