At first glance, a domestic cat showing off its teeth might look adorable — but behind that smile lies one of the biggest threats to native wildlife in Australia and around the world.
Every night, millions of pet cats roam freely outdoors, hunting not because they are hungry, but because it’s in their nature. While it may seem harmless, the toll on wildlife is devastating.
The Numbers Don’t Lie
Research shows that in Australia alone, domestic cats kill millions of native animals each year. From rare marsupials to reptiles and small birds, no species is safe when a cat is on the prowl.
Victims of Cat Predation
Some of the most at-risk species include:
- Numbats – already endangered, their populations are further pushed to the brink by roaming cats.
- Small wallabies – vulnerable joeys can’t escape a cat’s stealth.
- Possums – often targeted in suburban backyards at night.
- Snakes – cats will attack and kill even reptiles, disrupting natural balance.
- Hopping mice – tiny nocturnal mammals stand no chance against sharp claws and teeth.
And this is just the beginning. From lizards to native birds, cats change entire ecosystems simply by being left outside.
Dumped Cats, Bigger Problem
When cats are abandoned, the problem grows worse. Feral colonies establish quickly, breeding unchecked and devastating wildlife populations in both rural and urban areas. Unlike pet cats, these cats have no food source other than what they kill — and our wildlife pays the price.
What You Can Do
If you love your pet, keep them safe indoors at night. Provide enrichment, playtime, and stimulation so they don’t need to hunt to be happy. Desexing, microchipping, and responsible pet ownership are essential steps.
Most importantly — never dump a cat. If you can no longer care for your pet, reach out to shelters or rescue organisations who can help.
Checkout Australian Government – Department of Climate Change, Energy, and Environment and Water’s page on Feral Cats to learn even more about the impact on wildlife in Australia.
One Small Step, A Huge Difference
Protecting Australia’s precious wildlife starts in our homes. Keeping cats indoors not only saves numbat, wallaby, possum, reptile, and hopping mouse populations, but it also protects your cat from cars, disease, and injury.
Indoors, your cat can still live a rich life with climbing posts, window perches, puzzle feeders, and daily play that mimics hunting—without the harm. If you want safe outdoor time, use a secure cat run, leash and harness, or supervised courtyard access, especially at dawn and dusk.
Small changes—bells, ID tags, microchipping, and desexing—also reduce roaming and conflict. It’s kinder for wildlife, and it’s kinder for cats and neighbours, too.
Together, we can make sure that Australia’s wildlife and the Worlds wildlife have a fighting chance — and that those “cute teeth” in the photo don’t spell disaster for our most vulnerable species.
Want to Help Save Endangered Animals?
If you’re worried about the impact cats can have on native wildlife, you’re not alone — and the good news is you can help.
Your support helps Habitat for the Future protect and restore real habitat where endangered animals live, feed, and breed. Every $1.50 we receive goes towards protecting 1m² of habitat, turning your donation into a simple, measurable impact.
Visit our Supporters/Donations page to make a one-off contribution or get involved — because protecting wildlife takes all of us, and action starts today.