Outdoor cat statistics show that “outdoor access” can mean several different things: free roaming, controlled time outside, a catio, or an enclosed yard. Across the United States, the United Kingdom, Scandinavia, Australia, Ireland, and North America, research reports large differences in how cats live and how far they travel. The figures below keep those definitions, locations, and study populations separate.
Contents
- How many cats go outside?
- Outdoor access by country and study
- How far outdoor cats roam
- Wildlife and predation statistics
- Health and disease risks
- Welfare, behavior, and household life
How many cats go outside?
The U.S. Fish and Wildlife Service says the United States has more than 77 million pet cats. About 43 million U.S. pet cats spend at least some time outside, according to the same Keep Cats Indoors source. That is a national estimate, not a count of cats observed during one survey period.
The same source estimates 60 million to 100 million homeless stray and feral cats in the United States. It also says outdoor cats are responsible for the deaths of billions of birds and mammals each year in the country. Those figures describe national estimates and broad impacts, so they should not be treated as a direct count of kills by every individual roaming cat.
International studies show why one percentage cannot represent every outdoor-cat household:
| Location or study | Outdoor-access finding | Definition or scope |
|---|---|---|
| United Kingdom, PDSA PAW Report 2024 | 67% | Both indoor and outdoor access |
| Sweden, owner-behavior study | 34% | Free outdoor access |
| Canada and United States, Frontiers survey | 43% | Some form of outdoor access |
| 86 country-level estimates | 62% average | Owned cats with outdoor access |
| Ireland, domestic-cat study | 82.6% | Free outdoor access |
The global synthesis of owned-cat roaming reported an average outdoor-access share of 62% across 86 country-level estimates, with results ranging from 3% to 92%. That range reflects differences in countries, definitions, environments, and study methods rather than a universal trend.
Outdoor access by country and study
The 2024 PDSA PAW Report found that 67% of UK cats had access to both indoor and outdoor environments, while 31% lived indoors only and 1% lived outdoors only. The indoors-only share rose from 15% in 2011 to 31% in 2024. These are UK figures from that report and should not be transferred directly to U.S. households.
Among UK cats with both types of access, 70% could come and go as they chose. Another 31% were shut inside at certain times of day or night, 17% could go outdoors but chose to stay inside, 8% were shut outside at certain times, and 8% used a cat-fenced area or catio. These categories can overlap because they describe different aspects of access and management.
The PDSA report also gives reasons for indoor-only living. Fifty-seven percent of indoor-only cats stayed inside because their owner thought it was unsafe outside, 11% were indoors for health reasons, and 20% could go outside but chose to live indoors. Among indoor cats, 10% had a fenced outdoor area and 8% had access to a catio.
The Swedish study Owner Perceived Behavior in Cats and the Influence of Husbandry Practices, Housing and Owner Attitudes in Sweden reported 23% of respondents with indoor-only cats, 34% with free outdoor access, and 22% with another form of outdoor access, such as an enclosed area or leash walking. The same paper cited a Danish survey reporting 69.1% of cats with outdoor access and free roaming, compared with 22.4% confined strictly indoors.
An Australian study, The environmental needs of many Australian pet cats are not being met, reported that 46.3% of respondents had indoor-only cats. Its indoor-only category included cats kept fully indoors, given harness access, or provided with outdoor enclosures, so it is not directly comparable with free-roaming percentages.
The Frontiers survey Perspectives of Canadian and American Cat Owners on Provision of Uncontrolled Outdoor Access for Owned Domestic Cats found that 57% of owners kept their cats indoors and 43% provided some form of outdoor access. Uncontrolled outdoor access was provided by 21% of all owners. The sample included 1,633 cats with uncontrolled outdoor access and 4,896 without it.
How far outdoor cats roam
The Catscape study, Mapping the catscape formed by a population of pet cats with outdoor access, tracked 92 pet cats from 76 households in southern Norway. The cats spent an average of 79% of their outdoor time within 50 meters of their owner’s home, and their average daily outdoor tracking duration was 8.4 hours.
The study found home ranges from 0.3 to 22.1 hectares, with a mean of 2.6 hectares. Female home ranges averaged 1.5 hectares, while male home ranges averaged 3.7 hectares. These averages describe the tracked Norwegian sample, not all outdoor cats.
Thirty-seven percent of the catscape extended beyond urban areas and infrastructure. Yet 91% of the risk of encountering a cat fell into urban habitat. Population-level utilization intensity was 11 times higher within 50 meters of an owner’s home than at 50 to 100 meters. Inside the 99% catscape boundary, the highest and lowest utilization-intensity values differed by more than 1,800-fold.
The study also found that 10% of the cats accounted for 62% of non-urban habitat use. It estimated that at least 73% of cats inferred to live inside the study area were tracked and that about 44% of all outdoor cat activity in the area was captured. Those are study-coverage estimates, not estimates of national cat populations.
The U.S. Fish and Wildlife Service Keep Cats Indoors source says outdoor cats have been trapped up to 8 miles from their owners’ homes. It also reports that cats have contributed to the extinction of 33 species worldwide, and that outdoor cats can hunt endangered wildlife to the point of extinction on islands.
Wildlife and predation statistics
The global synthesis A global synthesis and assessment of free-ranging domestic cat diet identified 2,084 species that cats had depredated, scavenged, or otherwise consumed. Those species included nearly 9% of known birds, more than 6% of known mammals, and about 4% of known reptiles.
The synthesis recorded 347 consumed species classified as Near Threatened or at a higher level of concern on the IUCN Red List. That represented 16.65% of all species recorded in the review. Threatened prey made up 25.22% of island records, compared with 8.62% of continental records.
The research team compiled 544 unique publications and retained 533 unique publications with species-level records. These publication counts describe the evidence base used in the synthesis; they do not represent the number of individual cats or wildlife deaths.
The 2024 PDSA PAW Report found that 52% of owners said their cat played with toys in a predatory way by itself, while 50% said they played with their cat in a predatory way. Predatory play was reported for 83% of cats aged 0–4, 77% of cats aged 5–12, and 61% of cats over 12.
The same report found that 33% of younger cats preyed on wildlife, rising to 42% among cats aged 5–12 and falling to 27% among cats over 12. In a southeastern U.S. camera study summarized by Uncontrolled Outdoor Access for Cats: An Assessment of Risks and Benefits, 44% of companion cats with free-roaming outdoor access engaged in wildlife predation while outdoors.
Health and disease risks
The global synthesis Outdoor roaming of owned cats elevates risk of zoonotic pathogen exposure: A global synthesis found higher odds of several infections among outdoor-owned cats than indoor cats. Outdoor-owned cats had 3.2 times the odds of Toxoplasma gondii infection, 4.89 times the odds of Toxocara cati infection, 3.52 times the odds of Bartonella infection, and 3.46 times the odds of Leptospira infection.
These are comparative odds from a synthesis, not a prediction that a particular outdoor cat will become infected. The exposure comparison also does not establish that outdoor access is the only cause of every difference.
The U.S. Fish and Wildlife Service source says cats are the primary domestic carrier of rabies and that about 300 rabid cats are reported annually in the United States. It also says outdoor cats can spread toxoplasmosis, ringworm, hookworm, and other diseases to children by defecating in playgrounds and sandboxes.
The Irish study Prevalence of selected infectious agents in cats in Ireland found that 82.6% of cats had free outdoor access and 17.4% lived indoors. It reported 87.6% of cats as clinically healthy and 12.4% with a listed disease diagnosis. These Irish percentages describe that study population and its recorded diagnoses.
In Feline Heartworm in Clinical Settings in a High Canine Prevalence Area, 82.6% of cats had outdoor access, including 76.9% in urban areas and 85.3% in suburban areas. A review summarized in Uncontrolled Outdoor Access for Cats: An Assessment of Risks and Benefits reported ectoparasites in 65.1% of stray cats, 12.4% of indoor pets, and 23.9% of pets with outdoor activities.
Welfare, behavior, and household life
The PDSA PAW Report found that 58% of UK pet cats lived alone and 42% lived with another cat. Within multi-cat homes, 25% lived with cats they enjoyed being with and 17% lived with cats they did not always get along with. The report estimated that 1.8 million UK cats were potentially stressed by their living companion.
Stress-linked behaviors appeared in 55% of cats in multi-cat households, compared with 48% of cats living alone. Inappropriate elimination was reported for 22% of indoor-only cats in multi-cat households and 13% of indoor-and-outdoor cats.
The same report said 2% of indoor-only cats had no litter-tray provision, equivalent to about 78,000 cats. It also found that 91% of owners said owning a cat improved their life, 51% said cat ownership made them physically healthier, and 88% said it made them mentally healthier. Only 15% of cat owners had heard about the Five Welfare Needs.
The Frontiers survey found that 21.8% of outdoor-access cats were one year old or younger and 25.7% were purebred. In the compared cat groups, 97.2% and 97.9% were neutered. A New Zealand camera study reported that 55 cats were monitored with animal-borne cameras and 28 interacted with unfamiliar cats outdoors during the observation period.
Together, these figures describe a wide spectrum: unrestricted roaming, managed access, enclosures, harness walking, and indoor living. The most useful comparison is therefore the one that matches a study’s definition, country, measurement period, and cat population.