While it might be "unusual" for a council to ask people to stop their cats from roaming, a predator-free organisation says there are good reasons why we should keep them contained.
The Marlborough District Council recently sent a letter to Blenheim woman Brenda Green telling her that her cat Milo had allegedly been a nuisance to her neighbour.
The letter said the council's bylaw required Green to ensure her cat was not a nuisance - which meant it was not allowed to roam off the property.
The council said it took an "educative approach" to the bylaw and asked pet owners to resolve any issues themselves.
Predator Free New Zealand Trust chief executive Jessi Morgan understood about 20 councils across the country had provisions in place for cats - but often this was in relation to how many cats a household could have, or microchipping and desexing.
Meanwhile, some councils, such as Hamilton City and Horowhenua District, had animal nuisance bylaws. This meant any person who owned an animal must ensure it was kept in conditions that did not create a nuisance to others.
Others had bylaws around the keeping of animals, bees and poultry. Dog management bylaws were also common.
"It's unusual that they [council] have asked the owner to stop the cat wandering," Morgan said.
"In New Zealand legislation, cats are really interesting because there's nothing that really captures them, and so I was under the understanding that there's very little you can do about a cat wandering across your property."
It has been the reason for calls from some for a National Cat Act, so that New Zealand had some overarching rules around containing cats.
Morgan said it seemed there had been a shift in discussion around what responsible cat ownership meant in New Zealand.
"For generations we have let our cats roam … because there's very little that will damage them when they're free roaming.
"Whereas for many countries around the world, their owners don't let them roam freely because they get eaten by coyotes or snakes, or there's other predators that kill them or injure them.
"We're seeing this change in New Zealand where people are realising the impacts that cats have on our biodiversity. But also that it's actually healthier and safer for cats to stay home."
She said there were some steps people could take in the meantime to stop a cat leaving its property which would help protect native species.
"Cats are very unusual because they hunt for fun. They don't necessarily hunt for food. So even a well-fed cat will still hunt.
"Now the SPCA actually recommends that when you're raising a kitten that you raise it as an at home cat, because it's the best thing for a cat, and it's the best thing for wildlife.
"Cats have been raised in apartments all around the world for years, and they're perfectly happy, and I think as long as their owners give them lots of pats, and they've got some stimulation they can live perfectly happy lives as indoor cats. It's not unusual."
Local Democracy Reporting is Public Interest Journalism funded through NZ On Air