The next two weeks will be critical for people struggling through the drought in New South Wales.
Farmers are saying they can not find feed for their livestock beyond a few days’ supply.
Figures from online livestock selling company Auctions Plus show many producers have been offloading stock.
Farmers had ignored advice about de-stocking in recent weeks, Dr Davidson said.
"At that moment the cattle would have been fine to sell at a good price but some farmers have waited too long and now the cattle are emaciated and too weak to put on a truck," she said.
There are strategies farmers can employ in that situation but Dr Davidson said some were putting off calling the local vet because of the cost.
But some farmers have been hanging onto stock and the RSPCA however is dealing with a lot of calls from the public about animals in poor condition, and calls from farmers wanting help to euthanase cattle and sheep that are too weak to transport.
He said selling now could be a good option for many.
Dr Tom Mullholland addressed farmers in drought-affected areas of New South Wales recently about the mental challenges they were facing.
"If you’re feeling irritable, stressed, depressed — you don’t want to get out of bed, you might have a hardware issue.