When Ron Jones was a youngster growing up on Matarae Station, in Middlemarch, he was told never to shoot wild cats as they were the answer to the rabbit infestation.
Nowadays he has discovered there is an important little creature on the farm which needs his protection from those felines.
The Otago skink is one of New Zealand's rarest lizards. Known as the giant skink, it can grow up to 30cm long and has the highest status of threatened species - "nationally critical".
It is as rare as the kākāpō and is vulnerable to predators such as cats, ferrets and hedgehogs.
Jones said it was not until recent years that he was made aware his Shannon property was home to them.
"I was totally ignorant to the fact that they were living around us. But now I know they're there, I have become absolutely taken by them and it's become a passion of mine to trap their predators and do my bit to try and keep them from extinction."
Jones' neighbour Robin Thomas had been a DOC area manager, involved with skink conservation at Macraes, and it was he who made Jones aware of the lizards' existence on his property.
Jones and his wife Juliet decided to put a QEII covenant on 20ha of their land.
"Not just for our special lizards in this local area, but also larks and ground-nesting birds, and not to mention they are also terrible carriers of TB," he said.