Feral cat
A feral cat or stray cat is an unowned domestic cat that lives outdoors and avoids human contact; it does not allow itself to be handled or touched, and usually remains hidden from humans. Feral cats may breed over dozens of generations and become a local apex predator in urban, savannah and bushland environments, especially on islands where native animals did not evolve alongside predators. Some feral cats may become more comfortable with people who regularly feed them, but even with long-term attempts at socialization, they usually remain aloof and are most active after dusk. Of the 700 million cats in the world, an estimated 480 million are feral.
Feral cats are devastating to wildlife, and conservation biologists consider them to be one of the worst invasive species on Earth. They are included in the list of the world's 100 worst invasive alien species. Attempts to control feral cat populations are widespread but generally of greatest impact within purpose-fenced reserves.
Some animal rights groups advocate trap-neuter-return programs to prevent the feral cats from continuing to breed. Scientific evidence has demonstrated that TNR is not effective at controlling feral cat populations.
Definitions
The meaning of the term feral cat varies between professions and countries, and is sometimes used interchangeably with other terms such as free-roaming, street, alley, or community cat. Some of these terms are also used to refer to stray cats, although stray and feral cats are generally considered to be different by rescuers, veterinarians, and researchers. The lines between stray and feral cat are diffuse. The general idea is that owned cats that wander away from their homes may become stray cats, and stray cats that have lived in the wild for some time may become feral.Activists who seek to normalize feral cats in the environment are attempting to rebrand feral cats as community cats. Biologists say that this new term is euphemistic and distracts from feral cats being an environmental problem, and that it has connotations that falsely imply that feral cats exist with the consent of the communities where they live, and that the public has a moral obligation to support them in the outdoors. Studies have shown that the public does not support there being large numbers of free ranging cats in the outdoors, but that the use of language in surveys appears to influence the levels of support for different management options.
United Kingdom
In the United Kingdom, a feral cat is defined as a cat that chooses not to interact with humans, survives with or without human assistance, and hides or defends itself when trapped rather than allowing itself to be handled. Animal rescuers and veterinarians consider cats to be feral when they had not had much human contact particularly before eight weeks of age, avoid humans, and prefer to escape rather than attack a human. Feral cats are distinguished from domesticated cats based on their levels of socialization, ownership, and confinement, and on the amount of fear of, interaction with, and dependence upon humans. However, veterinarians and rescuers disagreed on whether a feral cat would tend to hiss and spit at or attack a human during an encounter, and disagreed on whether adult feral cats could potentially be tamed.Italy
In Italy, feral cats have been protected since 1991, and it is illegal to kill them. In Rome, they are surgically neutered by veterinarians of the Veterinary Public Services. Programs for sterilization of stray cats are also implemented in the Padua and Venice Provinces.United States
A survey of rescue and veterinary facilities in the United States revealed that no widely accepted definition of a feral cat exists. Many facilities used waiting periods to evaluate whether a cat was feral by observing whether the cat became less afraid and evasive over time. Other indicators included the cat's response to touch with an inanimate object, and observation of the cats' social behavior in varying environments such as response to human contact, with a human nearby, or when moved to a quieter environment.Australia
The Australian Government categorizes cats who have no interaction with or assistance from humans as feral, and unowned cats who rely on humans as semi-feral or stray. However, even these so-called 'managed colonies' often have a devastating impact on wildlife as demonstrated in the decimation of native mammals in adjacent reserves, such as occurred with numbats and woylies in Western Australia. Feral cats are ranked as the highest threat to Australia's mammals, and the Australian Government's Threatened Species Strategy identifies tackling feral cats as its top priority for action, with a threat factor more than double that of the next highest threat. An introduced predator, feral cats have contributed to the extinction of at least 28 mammal species, wreak havoc on threatened animals and plants on the brink of extinction, kill over 1.5 billion native mammals, birds, reptiles and frogs and 1.1 billion invertebrates in Australia each year, and are a recognised threat to over 200 nationally threatened species.Farm cat
A farm cat is a free-ranging domestic cat that lives in a cat colony on agricultural farms in a feral or semi-feral condition. Farm cats primarily live outdoors and usually shelter in barns. They are partially supplied with food and milk, but mainly subsist on hunting rodents such as black rat, brown rat, common vole and Apodemus species. In England, farm cat colonies are present on the majority of farms and consist of up to 30 cats. Female farm cats show allomothering behaviour; they use communal nests and take care of kittens of other colony members.Some animal rescue organizations maintain Barn Cat Programs and rehome neutered feral cats to people who are looking for barn cats.
Ship's cat
Domestic cats have been members of ship crews since the beginning of commercial navigation. Phoenician and Etruscan traders probably carried cats on board their trading vessels to Italy and the Mediterranean islands.History
were venerated for killing rodents and venomous snakes.The need to keep rodents from consuming or contaminating grain crops stored for later human consumption may be the original reason that cats were domesticated. The spread of cats throughout much of the world is thought to have originated in Egypt. Scientists do not agree on whether cats were domesticated in Ancient Egypt or introduced there after domestication. Phoenician traders brought them to Europe for control of rat populations, and monks brought them further into Asia. Roman armies also contributed spreading cats and eventually brought them to Britain. Since then, cats continued to be introduced to new countries, often by sailors or settlers. Cats are thought to have been introduced to Australia in either the 1600s by Dutch shipwrecks, or the late 1700s by English settlers. These domesticated cats began to form feral populations after their offspring began living away from human contact.
In the 19th and 20th centuries, several cat specimens were described as wildcat subspecies that are considered feral cat populations today:
- Felis reyi, proposed by Louis Lavauden in 1929, was a skin and a skull of a specimen from Biguglia in Corsica that was smaller and darker than the European wildcat, had a much shorter tail than the African wildcat, and differed in fur colour and markings from both. When Reginald Innes Pocock reviewed Felis skins in the collection of the Natural History Museum, London, he considered Felis reyi a synonym of Felis lybica sarda, the Sardinian wild cat. The Corsican wildcat is considered to have been introduced in the early first millennium. The earliest known fossil records of cats date to the early 14th century, but older chronostratigraphic layers revealed fossils of livestock introduced since the Iron Age.
- Felis lybica jordansi, proposed by Ernst Schwarz in 1930, was a skull and skin of a male specimen from Santa Margarita in Mallorca that had more pronounced stripes than the African wildcat. This is also considered to have descended from domestic cats introduced to the island.
- Felis silvestris cretensis, proposed by Theodor Haltenorth in 1953, was a cat skin purchased in a bazaar in Chania that resembled an African wildcat, but had a bushy tail like a European wildcat. Groves considered the Cretan wildcat an introduced feral cat.
Distribution and habitat
Feral cat colonies also occur on the Japanese islands of Ainoshima, Hahajima and Aoshima, Ehime.
The feral cat population on the Hawaiian Islands is mainly of European origin and probably arrived in the 19th century on ships.
Feral cat colonies in Rome have been monitored since 1991. Urban feral cats were studied in Madrid, Jerusalem and Ottawa.
Behavior and ecology
Some behaviors of feral cats are commonly observed, although there is disagreement among veterinarians, rescuers and researchers on the prevalence of some. In a free-roaming environment, feral cats avoid humans. They do not allow themselves to be handled or touched by humans, and back away or run when they are able to do so. If trapped, they hiss, growl, bare their teeth, or strike out. They remain fairly hidden from humans and will not approach, although some feral cats gradually become more comfortable around humans who feed them regularly.Most feral cats have small home ranges, although some are more transient and travel long distances. The home ranges of male feral cats, which are generally two or three times larger than those of female cats, are on average under, but can vary from almost to under. This variance is often due to breeding season, access to females, whether the cat is neutered, age, time of day, and availability of prey.
Feral cats depend on the presence of human settlement to subsist. Colonies and stray feral cats will settle in urban, suburban, and rural developments like cities and farms, wherever they can find easy access to food or prey animals. Few to no feral cats are found significantly distant from human settlements. While feral cats prey on other small mammals and reptiles, their home ranges don't change to reflect the seasonal availability of prey animals. This indicates that feral cats have a fairly consistent home range, and migration is more representative of mate availability, consistency in human-related food sources, or other less transient stimuli.