Outdoor cats are active both day and
night, although they tend to be slightly more active at night. Domestic cats spend the majority of their time in the vicinity of their homes, but they can range a radius of many hundreds of meters. They establish
territories that vary considerably in size, in one study ranging . The timing of cats' activity is quite flexible and varied; but being low-light predators, they are generally
crepuscular, which means they tend to be more active near dawn and dusk. However, house cats' behavior is also influenced by human activity, and they may adapt to their owners' sleeping patterns to some extent. Cats conserve energy by sleeping more than most animals, especially as they grow older. The daily duration of sleep varies, usually between 12 and 16 hours, with 13 to 14 being the average. Some cats can sleep as much as 20 hours. The term "cat nap" for a short rest refers to the cat's tendency to fall asleep (lightly) for a brief period. Short periods of
rapid eye movement sleep are often accompanied by muscle twitches, which suggests they are dreaming. Behavioral and personality traits depend on a complex interplay between genetic and environmental factors. Scientific evidence is mixed about the popular belief that those traits are linked to coat colors.
Sociability The social behavior of the domestic cat ranges from widely dispersed individuals to
feral cat colonies that gather around a food source, based on groups of co-operating females. Within such groups, one cat is usually dominant over the others. Each cat in a colony holds a distinct territory, with sexually active males having the largest territories, which are about 10 times larger than those of female cats and may overlap with several females' territories. These territories are marked by
urine spraying, rubbing objects at head height with secretions from facial glands, and by
defecation. Between these territories are neutral areas where cats watch and greet one another without territorial conflicts. Outside these neutral areas, territory holders usually chase away stranger cats, at first by staring, hissing, and
growling, and, if that does not work, by short and violent, noisy attacks. Because cats do not have a social survival strategy or
herd behavior, they always hunt alone. Life in proximity to humans and other domestic animals has led to a symbiotic social adaptation in cats, and cats may express great affection toward humans or other animals.
Ethologically, a cat's human keeper functions as a mother surrogate. Adult cats live in a type of extended kittenhood, a form of behavioral
neoteny. Their high-pitched sounds may mimic the cries of a hungry human infant, making them particularly difficult for humans to ignore. Some pet cats are poorly socialized. In particular, older cats may show aggressiveness toward newly arrived kittens, which includes biting and scratching; this type of behavior is known as feline asocial aggression.
Redirected aggression is a common form of aggression that can occur in multiple cat households. In redirected aggression, a cat is usually agitated by a stimulus such as a sight, sound, or other trigger that causes heightened anxiety or arousal; if the cat cannot attack the original stimulus, it may redirect its aggression toward the nearest cat, pet, human, or other being. Domestic cats'
scent rubbing behavior toward humans or other cats is thought to be a feline means of social bonding.
Communication Domestic cats use many
vocalizations for communication, including
purring,
trilling, hissing, growling/snarling, grunting, and several different forms of meowing. Their
body language, including position of ears and tail, relaxation of the whole body, and kneading of the paws, are all indicators of mood. The tail and ears are particularly important social signal mechanisms; a raised tail indicates a friendly greeting, and flattened ears indicate hostility. Tail-raising also indicates the cat's position in the group's
social hierarchy, with dominant individuals raising their tails less often than subordinate ones. Feral cats are generally silent. Nose-to-nose touching is also a common greeting and may be followed by
social grooming, which is solicited by one of the cats raising and tilting its head. or eating. Although purring is popularly interpreted as indicative of pleasure, it has been recorded in a wide variety of circumstances, most of which involve physical contact between the cat and another, presumably trusted individual. The exact mechanism by which cats purr has long been elusive, but it has been proposed that purring is generated via a series of sudden build-ups and releases of pressure as the
glottis is opened and closed, which causes the
vocal folds to separate forcefully. The
laryngeal muscles in control of the glottis are thought to be driven by a
neural oscillator which generates a cycle of contraction and release every 30–40
milliseconds (giving a frequency of 33 to 25 Hz). Domestic cats observed in rescue facilities have 276 morphologically distinct
facial expressions based on 26 facial movements; each facial expression corresponds to different social functions that are probably influenced by domestication. Facial expressions have helped researchers detect pain in cats. The feline
grimace scale's five criteria—ear position, orbital tightening, muzzle tension, whisker change, and head position—indicated the presence of acute pain in cats.
Grooming Cats are known for spending considerable amounts of time licking their coats to keep them clean. The cat's tongue has backward-facing spines about 0.5 millimeter long, called
filiform papillae, which contain
keratin making them rigid. The papillae act like a hairbrush, and some cats, particularly
long-haired cats, occasionally regurgitate sausage-shaped long
hairballs of fur that have collected in their stomachs from grooming. Hairballs can be prevented with remedies that ease elimination of the hair through the
gut, and regular grooming of the coat with a comb or stiff brush.
Cat intelligence Cat intelligence refers to a cat's ability to solve problems, adapt to its environment, learn new behaviors, and communicate its needs. Structurally, a cat's brain shares similarities with the human brain, containing around 250 million neurons in the cerebral cortex, which is responsible for complex processing. Cats display
neuroplasticity allowing their brains to reorganize based on experiences. They have well-developed memory retaining information for a decade or longer. These memories are often intertwined with emotions, allowing cats to recall both positive and negative experiences associated with specific places. While they excel in
observational learning and problem-solving, studies conclude that they struggle with understanding cause-and-effect relationships in the same way that humans do. Cat
intelligence study is mostly from consideration of the domesticated cat. Living in urban environments has exposed it to challenges that require adaptive behaviors, contributing to cognitive development. Selective breeding and genetic changes have further influenced its intelligence. Kittens learn essential survival skills by observing their mothers, while adult cats refine their abilities through
trial and error.
Play Domestic cats, especially young kittens, are known for their love of play. This behavior mimics hunting and is important in helping kittens learn to stalk, capture, and kill prey. Cats also engage in
play fighting, both with each other and with humans. This behavior may be a way for cats to practice the skills needed for real combat, and it might also reduce the fear that they associate with launching attacks on other animals. Cats also tend to play with toys more when they are hungry. Owing to the close similarity between play and hunting, cats prefer to play with objects that resemble prey, such as small furry toys that move rapidly, but rapidly lose interest. They become
habituated to a toy they have played with before. String is often used as a toy, but if it is eaten, it can become caught at the base of the cat's tongue and then move into the
intestines, a medical emergency which can cause serious illness, even death.
Hunting and feeding is the prey of this domestic cat. The shape and structure of cats' cheeks is insufficient to allow them to take in liquids using suction. Lapping at a rate of four times a second, the cat touches the smooth tip of its tongue to the surface of the water, and quickly retracts it like a corkscrew, drawing water upward into their mouths. Feral cats and free-fed house cats consume several small meals in a day. The frequency and size of meals varies between individuals. They select food based on its temperature, smell, and texture; they dislike chilled foods and respond most strongly to moist foods rich in amino acids, which are similar to meat. Cats reject novel flavors (a response termed
neophobia) and learn quickly to
avoid foods that have tasted unpleasant in the past. It is also a common misconception that all cats like milk or cream, as they tend to avoid sweet food and milk. Most adult cats are
lactose intolerant; the sugar in milk is not easily digested and may cause soft stools or
diarrhea. Some also develop odd eating habits and like to eat or chew on things such as wool, plastic, cables, paper, string, aluminum foil, or even coal. This condition,
pica, can threaten their health, depending on the amount and toxicity of the items eaten. Cats hunt small prey, primarily birds and rodents, and are often used as a form of pest control. Other common small creatures, such as lizards and snakes, may also become prey. Cats use two hunting strategies, either stalking prey actively, or
waiting in ambush until an animal comes close enough to be captured. The strategy used depends on available prey, with cats waiting in ambush outside burrows, but tending to actively stalk birds. Domestic cats are a major
predator of wildlife in the United States, killing an estimated 1.3 to 4.0 billion birds and 6.3 to 22.3 billion mammals annually. Certain species appear more susceptible than others; in one English village, for example, 30% of house sparrow mortality was linked to the domestic cat. In the recovery of ringed robins (
Erithacus rubecula) and dunnocks (
Prunella modularis) in Britain, 31% of deaths were a result of cat predation. In parts of North America, the presence of larger carnivores such as
coyotes, which prey on cats and other small predators, reduces the effect of predation by cats and other small predators such as
opossums and
raccoons on bird numbers and variety. Another poorly understood element of cat hunting behavior is the presentation of prey to human guardians. One explanation is that cats adopt humans into their social group and share excess kill with others in the group according to the
dominance hierarchy, in which humans are reacted to as if they are at or near the top. Another explanation is that they attempt to teach their guardians to hunt or to help their human as if feeding "an elderly cat, or an inept kitten". This hypothesis is inconsistent with the fact that male cats also bring home prey, though males have negligible involvement in raising kittens. The most common reason for feral
cat fighting is competition between two males to mate with a female, and most fights are won by the heavier male. Another common reason for fighting in domestic cats is the difficulty of establishing territories within a small home. When cats become aggressive, they try to appear larger and more threatening by raising their fur, arching their backs, turning sideways, hissing, or spitting. Often, the ears are pointed down and back to avoid damage to the inner ear and potentially listen for any changes behind them while focused forward. Cats may also vocalize loudly and bare their teeth in an effort to further intimidate their opponents. Fights usually consist of grappling, slapping the face and body with the forepaws, and bites. Cats throw themselves to the ground in a defensive posture to rake their opponent's belly with their hind legs. Serious damage is rare, because the fights are usually short, with the loser fleeing with scratches to the face and ears. More severe fights for mating rights may give deep punctures and lacerations. Normally, serious injuries from fighting are limited to infections from scratches and bites. Bites are probably the main route of transmission of the
feline immunodeficiency virus. Sexually active males are usually involved in many fights and have battered faces. Cats are willing to threaten animals larger than them to defend their territory, such as dogs and
foxes.
Reproduction known as
lordosis behavior. The cat secretes and perceives
pheromones. Female cats, called
queens, are
polyestrous with several
estrus cycles during a year, lasting usually 21 days. They are usually ready to mate between early February and August in northern temperate zones and throughout the year in equatorial regions. Several males, called tomcats, are attracted to a female in heat. They fight over her, and the victor wins the right to mate. At first, the female rejects the male, but eventually, the female allows the male to mate. The female utters a loud yowl as the male pulls out of her because a male cat's
penis has a band of about 120–150 backward-pointing
penile spines, which are about long; upon withdrawal of the penis, the spines may provide the female with increased sexual stimulation, which acts to
induce ovulation. After mating, the female cleans her
vulva thoroughly. If a male attempts to mate with her at this point, the female attacks him. After about 20 to 30 minutes, once the female is finished grooming, the cycle will repeat. Furthermore, cats are
superfecund; that is, a female may mate with more than one male when she is in heat, with the result that different kittens in a litter may have different fathers. The
morula forms 124 hours after conception. At 148 hours, early
blastocysts form. At 10–12 days, implantation occurs. The
gestation of queens lasts between 64 and 67 days, with an average of 65 days. Based on a study of 2,300 free-ranging queens conducted from May 1998 and October2000, they had one to six kittens per
litter, with an average of three kittens. They produced a mean of 1.4 litters per year, but a maximum of three litters in a year. Of 169 kittens, 127 died before they were six months old due to a trauma caused in most cases by dog attacks and road accidents. The first litter is usually smaller than subsequent litters. Kittens are weaned between six and seven weeks of age. Queens normally reach sexual maturity at 5–10 months, and males at 5–7 months. This varies depending on breed. They can be surgically
sterilized (spayed or
castrated) as early as seven weeks to limit unwanted reproduction. This surgery also prevents undesirable sex-related behavior, such as aggression,
territory marking (spraying urine) in males, and yowling (calling) in females. Traditionally, this surgery was performed at around six to nine months of age, but it is increasingly being performed before
puberty, at about three to six months. In the United States, about 80% of household cats are neutered. == Lifespan and health ==