Australia's National Livestock Identification System is proving useful beyond its original purpose of tracking disease in cattle.
After Cyclone Yasi ravaged north Queensland and took out farmers' fences, the unique ID given to each beast is making it easier to get wandering animals home.
Minister for Primary Industries Tim Mulherin said the widespread destruction wreaked by Yasi meant livestock, pets and wildlife all became displaced.
"In the aftermath of natural disasters, livestock are at particular risk of displacement due to damaged fencing and will often be found on neighbouring properties," Mr Mulherin said in a statement.
He said it was important landholders complied with the National Livestock Identification System (NLIS) in these situations.
"Because of the possibility of disease outbreaks in the aftermath of floods and other disasters, it is imperative to have good traceability of cattle," he said.
"Biosecurity Queensland can provide advice to anyone finding stray cattle about how to identify and return livestock safely."
Mr Mulherin warned motorists to be especially careful at this time and keep an eye out for animals on the roads.