She was stunned when her prized pet turned bright orange. "Snappy's pretty territorial and he attacked the filter one day and a few weeks after that, I noticed he was orange," she said.
The 2.5m croc stays warm at night in his heated indoor tank before moving outside through his "croc flap" to bask in sunshine by day. "It doesn't seem to have affected him at all. He's still got a healthy appetite, he is normally aggro and doing everything he always does," Ms Sandstrom said.
Darwin croc expert Grahame Webb examined the photos and confirmed Snappy was a picture of health.