"Stone cold killers". That's how Conservation Minister Tama Potaka describes feral cats, which he's just added to the Predator Free 2050's hitlist. It means that feral cats will join the likes of stoats, ferrets, weasels, rats and possums on the official list of pests targeted for total eradication from these shores. This is a sharp change of policy - revealed to exclusively to RNZ by the Minister today. He sat down with Farah Hancock who spoke to Lisa Owen.