Dogs, motion sensors will try to find cat intruder on New Zealand's islands
There were two possible sightings of the cat, on either side of Islington Bay which connects the islands by a bridge.
Department of Conservation acting Auckland Inner Islands operations manager John Galilee said the sightings were being taken very seriously.
Cats eat native birds, bats, lizards, wētā and other native insects. Rangitoto and neighbouring Motutapu have been free of predators and pests since 2011.
"We need to know if there is, or isn't, a cat on Rangitoto or Motutapu in the Islington Bay area. So we've launched a response," Mr Galilee said.
"We're sending two conservation dogs, trained to detect cats, and their handler, to Islington Bay to try and establish if there's a cat in the area."
Motion sensitive cameras and cat tracking devices will also be placed in the area where the cat was spotted.
"We want to remind the public that cats and dogs are not allowed on pest-free islands. That's because of the serious threat they pose to native birds and other native wildlife on these islands." ■