Researchers have identified the simplest way to help your cat live longer: keep it indoors. Experts estimate that outdoor pet cats have lives at least two to three years shorter than those kept contained. A comprehensive research review found that allowing domestic cats to roam outside exposes them to considerable danger, including road traffic accidents, fights, falls, and infectious diseases.
Global Risks for Roaming Cats
Cameras mounted on collars provide a cat's-eye view of the hazards roaming cats face. In one study of 55 free-roaming felines in the United States, 25% risked poisoning by eating or drinking while away from home. Nearly half (45%) crossed roads, 25% encountered other cats, 20% crawled under houses, and 20% explored storm drains. Similar studies in New Zealand and Australia confirm these dangers are widespread.
Deadly Outcomes
In a recent UK study, road traffic accidents were the leading cause of death for cats aged under one year up to eight-year-old cats. European estimates suggest 18–24% of cats are struck by a car during their lifetime, with around 70% of those incidents proving fatal. Victims are often under five years old and predominantly male. Roaming cats also face serious infectious diseases such as Feline Immunodeficiency Virus (FIV) and frequent fights leading to abscesses that can be fatal.
In one study tracking 55 roaming cats in Western Australia over just eight months, two were poisoned, one lost a front leg in a traffic accident, one fractured two canine teeth in a fall, and two required veterinary treatment for fight-related injuries. Drawing all these factors together, researchers estimated outdoor pet cats have lives at least 2–3 years shorter than contained pet cats.
How to Reduce Risks
The simplest way to protect cats is to contain them on your property. Backyards can be modified with fence-top rollers to prevent escape. Some owners create a “catio” – an outdoor cat enclosure – allowing cats to enjoy fresh air and sunshine while remaining secure. Many cats can also be trained to walk on a harness or leash for supervised outings.
Indoor cats need entertainment: outside views, toys, scratching surfaces, above-ground climbing and sitting spaces, and opportunities for play. They require two indoor litter trays, cleaned frequently. In multi-cat households, provide one tray per cat plus an extra, placed in separate quiet locations away from food bowls.
Responsible Cat Ownership
Australians love their cats. In 2019, roughly a quarter of Australian households owned a cat; by 2025, that figure had risen to a third. Over the same period, households keeping cats indoors rose from 36% to 48%. Researchers hope this trend continues, as containment not only protects wildlife but also ensures cats live longer, healthier lives.
