Few questions divide cat owners like whether a cat should be allowed out. In Britain most cats have always had the run of the garden and beyond. In North America and Australia most are kept in. Each side thinks the other is taking a risk, and each is partly right. The decision touches on safety, health, behaviour and how a cat spends its day. The research is worth knowing before you settle on your own answer.

The Case for Indoors

Indoor vs Outdoor Cat

An indoor cat is out of reach of traffic, fights with other cats and most infectious disease. You know what it eats, you notice when it is off colour, and it is never out in a storm.

The cost is a smaller world. Cats keep most of the instincts of their wild ancestors, and a house offers fewer chances to explore, climb, stalk and patrol. A cat with too little to do can turn bored or frustrated, and that is where scratching, spraying and fights between housemates often start.

The Case for Outdoors

A cat with a garden and a fence to sit on gets to do the things it was built for. It covers ground, meets weather, follows scents and makes its own decisions about where to spend the afternoon.

The risks are the ones every owner already worries about. Roads, other cats, poisons, theft and the parasites and diseases that come with contact with the wider world.

So what does the research say when it weighs one against the other, and is there a middle ground...

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Research rating: ⭐⭐⭐⭐ (4 of 5). Last updated 25 August 2026.

Sources

  • Kayleigh Chalkowski, Alan E. Wilson, Christopher A. Lepczyk, Sarah Zohdy. Who let the cats out? A global meta-analysis on risk of parasitic infection in indoor versus outdoor domestic cats. https://doi.org/10.1098/rsbl.2018.0840
  • Judith L. Stella, Candace C. Croney. Environmental Aspects of Domestic Cat Care and Management: Implications for Cat Welfare. https://doi.org/10.1155/2016/6296315
  • Rachel Foreman-Worsley, Lauren R. Finka, Samantha J. Ward, Mark J. Farnworth. Indoors or Outdoors? An International Exploration of Owner Demographics and Decision Making Associated with Lifestyle of Pet Cats. https://doi.org/10.3390/ani11020253
  • Marine Parker, Jessica Serra, Bertrand L. Deputte, Brunilde Ract-Madoux. Comparison of Locomotor and Feeding Rhythms between Indoor and Outdoor Cats Living in Captivity. https://doi.org/10.3390/ani12182440
  • Luciana Santos de Assis, Daniel Simon Mills. Introducing a Controlled Outdoor Environment Impacts Positively in Cat Welfare and Owner Concerns: The Use of a New Feline Welfare Assessment Tool. https://doi.org/10.3389/fvets.2020.599284