Aging in cats is the process by which cats change over the course of their natural lifespans. The average lifespan of a domestic cat may range from 13 to 20 years. As cats senesce, they undergo predictable changes in health and behavior. Dental disease and loss of olfaction are common as cats age, affecting eating habits. Arthritis and sarcopenia are also common in older cats. How a cat's health is affected by aging may be managed through modifications in a cat's diet, accessibility adjustments, and cognitive stimulation.
Reliable information on the lifespans of domestic cats is varied and limited. [1] Nevertheless, a number of studies have investigated the matter and have come up with noteworthy estimates. Estimates of mean lifespan in these studies range between 13 and 20 years, with a single value in the neighborhood of 15 years. [2] [3] At least one study found a median lifespan value of 14 years and a corresponding interquartile range of 9 to 17 years. [4] Maximum lifespan has been estimated at values ranging from 22 to 30 years although there have been claims of cats living longer than 30 years. [1] [2] [4] [5] [6] [7] [8] According to the 2010 edition of the Guinness World Records , the oldest cat ever recorded was Creme Puff, who died in 2005, aged 38 years, 3 days. [9] Female cats typically outlive male cats, and crossbred cats typically outlive purebred cats. [2] [4] It has also been found that the greater a cat's weight, the lower its life expectancy on average. [4] The current oldest verified cat alive is Flossie, who was born in 1995 in England, United Kingdom. [10]
A common misconception in cat aging (and dog aging) is that a cat ages the equivalent of what a human would age in seven years each year. This is inaccurate due to the inconsistencies in aging as well as there being far more accurate equations to predict a cat's age in "cat years". A more accurate equation often used by veterinarians to predict cat years is 4x + 16, (x being the chronological age of the cat) which works for cats who are two years of age or older.[ citation needed ]
In one study of cat mortality, the most frequent causes were trauma (12.2%), renal disorder (12.1%), non-specific illness (11.2%), neoplasia (10.8%) and mass lesion disorders (10.2%). [4] [11]
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Being aware of the changes in pets' needs and abilities allows for gracefully aging assistance from pet owners. Hannah Harper, associate editor of Health Magazine, describes five major points to ease the transition of aging pets. Step one is an increase in vet visits. Director of Behavior Services at MSPCA, Terri Bright PhD, encourages “taking note of your pet’s abilities so you can catch progressing conditions”. These changes may include both behavioral and physiological changes. Vet visits should increase to twice a year and be focused on tracking mobility and monitoring full body health. Step two is making lifestyle adjustments. Aging pets may experience arthritis, causing difficulty with necessary mobility involved in jumping, running, walking, and bending. Household adjustments may need to be made to fit the needs of the animal. This may include more accessible bedding, litter boxes, and feeding locations– floor level. Step three is mental engagement. Like humans, pets also experience cognitive decline with age. The most effective way to slow this decline is with mental engagement. Harper suggests toys such as puzzles that “encourage your dog or cat to ‘solve’ a problem” or toys/games that “tap into their hunter-prey drive. Step four is to anticipate behavioral changes. New behaviors may develop with aging including aggression and anxiety, often related to the physical changes your pet is experiencing. Step five is to consider alternative therapies. This step is meant for pets struggling with joint pain or arthritis and seeking pain management. Suggested therapies include aqua therapy, massages, as well as taking oral supplements.
Aging in cats impacts their nutritional behavior. Various areas in the feline aging process can affect nutrition. This includes reduced food intake and decreased nutritional absorption. There is a correlation between increasing age and dental disease in cats. This oral discomfort affects the amount of food felines consume. The key to preventing oral pain from dental disease is oral examinations and early appropriate intervention.” [11] Arthritis in older cats may also restrict mobility and discomfort when feeding. Olfaction loss with aging can also impact a feline's food intake.[ citation needed ] There are many factors discussed in the article that led to reduced food intake. Their second focus is decreased nutritional absorption. They provide evidence suggesting that “older cats have decreased fat and protein digestion and if this loss is not accounted for cats will begin to metabolize their lean body mass leading to sarcopenia."[ citation needed ] Cats that can preserve their lean body mass have increased longevity. Because of this, dietary manipulation can have positive effects in feline longevity. [11] [12]
The cat, commonly referred to as the domestic cat or house cat, is a small domesticated carnivorous mammal. It is the only domesticated species of the family Felidae. Recent advances in archaeology and genetics have shown that the domestication of the cat occurred in the Near East around 7500 BC. It is commonly kept as a house pet and farm cat, but also ranges freely as a feral cat avoiding human contact. It is valued by humans for companionship and its ability to kill vermin. Its retractable claws are adapted to killing small prey like mice and rats. It has a strong, flexible body, quick reflexes, sharp teeth, and its night vision and sense of smell are well developed. It is a social species, but a solitary hunter and a crepuscular predator. Cat communication includes vocalizations like meowing, purring, trilling, hissing, growling, and grunting as well as cat body language. It can hear sounds too faint or too high in frequency for human ears, such as those made by small mammals. It secretes and perceives pheromones.
Neutering, from the Latin neuter, is the removal of a non-human animal's reproductive organ, either all of it or a considerably large part. The male-specific term is castration, while spaying is usually reserved for female animals. Colloquially, both terms are often referred to as fixing. In male horses, castrating is referred to as gelding. An animal that has not been neutered is sometimes referred to as entire or intact.
Cat food is food specifically designed for consumption by cats. As obligate carnivores, cats have specific requirements for their dietary nutrients, namely nutrients found only in meat or synthesised, such as taurine and Vitamin A. Certain nutrients, including many vitamins and amino acids, are degraded by the temperatures, pressures and chemical treatments used during manufacture, and hence must be added after manufacture to avoid nutritional deficiency. Cat food is typically sold as dry kibble, or as wet food in cans and pouches.
Onychectomy, popularly known as declawing, is an operation to remove an animal's claws surgically by means of the amputation of all or part of the distal phalanges, or end bones, of the animal's toes. Because the claw develops from germinal tissue within the third phalanx, amputation of the bone is necessary to fully remove the claw. The terms onychectomy and declawing imply mere claw removal, but a more appropriate description would be phalangectomy, excision of toe bone.
Carnivore protoparvovirus 1 is a species of parvovirus that infects carnivorans. It causes a highly contagious disease in both dogs and cats separately. The disease is generally divided into two major genogroups: FPV containing the classical feline panleukopenia virus (FPLV), and CPV-2 containing the canine parvovirus type 2 (CPV-2) which appeared in the 1970s.
Feline infectious peritonitis (FIP) is a common and aberrant immune response in cats to infection with feline coronavirus (FCoV).
The health of dogs is a well studied area in veterinary medicine.
Cerebellar hypoplasia (CH) is a neurological condition in which the cerebellum is smaller than usual or not completely developed. It has been reported in many animal species.
Pet food is animal feed intended for consumption by pets. Typically sold in pet stores and supermarkets, it is usually specific to the type of animal, such as dog food or cat food. Most meat used for animals is a byproduct of the human food industry, and is not regarded as "human grade".
Feline viral rhinotracheitis (FVR) is an upper respiratory or pulmonary infection of cats caused by Felid alphaherpesvirus 1 (FeHV-1), of the family Herpesviridae. It is also commonly referred to as feline influenza, feline coryza, and feline pneumonia but, as these terms describe other very distinct collections of respiratory symptoms, they are misnomers for the condition. Viral respiratory diseases in cats can be serious, especially in catteries and kennels. Causing one-half of the respiratory diseases in cats, FVR is the most important of these diseases and is found worldwide. The other important cause of feline respiratory disease is feline calicivirus.
Feline odontoclastic resorption lesion (FORL) is a syndrome in cats characterized by resorption of the tooth by odontoclasts, cells similar to osteoclasts. FORL has also been called Feline tooth resorption (TR), neck lesion, cervical neck lesion, cervical line erosion, feline subgingival resorptive lesion, feline caries, or feline cavity. It is one of the most common diseases of domestic cats, affecting up to two-thirds. FORLs have been seen more recently in the history of feline medicine due to the advancing ages of cats, but 800-year-old cat skeletons have shown evidence of this disease. Purebred cats, especially Siamese and Persians, may be more susceptible.
Aging in dogs varies from breed to breed, and affects the dog's health and physical ability. As with humans, advanced years often bring changes in a dog's ability to hear, see, and move about easily. Skin condition, appetite, and energy levels often degrade with geriatric age. Medical conditions such as cancer, kidney failure, arthritis, dementia, and joint conditions, and other signs of old age may appear.
The health of domestic cats is a well studied area in veterinary medicine.
Feline idiopathic cystitis (FIC) or feline interstitial cystitis or cystitis in cats, is one of the most frequently observed forms of feline lower urinary tract disease (FLUTD). Feline cystitis means "inflammation of the bladder in cats". The term idiopathic means unknown cause; however, certain behaviours have been known to aggravate the illness once it has been initiated. It can affect both males and females of any breed of cat. It is more commonly found in female cats; however, when males do exhibit cystitis, it is usually more dangerous.
Obesity in pets occurs when excessive adipose tissue accumulates in the body, and is generally defined as occurring when an animal's body weight is at least 20% greater than its optimal body weight. Obesity is associated with metabolic and hormonal changes, and can predispose pets to illnesses like orthopedic disease, diabetes, and cancer.
A senior cat diet is generally considered to be a diet for cats that are mature, senior, or geriatric. Nutritional considerations arise when choosing an appropriate diet for a healthy senior cat. Dietary management of many conditions becomes more important in senior cats because changes in their physiology and metabolism may alter how their system responds to medications and treatments.
Oral health can be difficult for pet owners and veterinary teams to manage in cats, particularly for pets whose owners are not committed to regular tooth brushing and/or dental treats. Oral disease is common among cats, and may lead to other health issues such as bacterial infections of major organs including the heart, kidneys and liver. When pet owners are aware of the benefits of supporting good oral health in cats, this substantially improves positive outcomes. Dietary selection, along with at-home-dental-hygiene care, allows cat owners to influence the oral status of their pets.
Cats exposed to allergens may develop allergies or allergic reactions. Allergies tend to become evident and intensify over extended periods of time and can take years to develop. Some allergic diseases and allergies in cats include feline atopic dermatitis, flea allergy dermatitis, feline-mosquito hypersensitivity, and food-induced allergy. In the case of feline atopy, hypersensitivity to allergens is due to genetic predisposition. However, various allergies may arise due to environmental factors. Allergens, ingested, inhaled, or airborne, can be seasonal or non-seasonal, similar to allergies in humans. Suspected seasonal allergens include but are not limited to pollen, fleas, and mosquito bites; suspected non-seasonal allergens include but are not limited to plastic materials, food, dust, trees, and grass. After exposure to suspected allergens, symptoms may be immediate or delayed, arising within a few minutes to two hours. Symptoms can include both dermatological and gastrointestinal signs such as itchy skin, hair loss and excessive scratching. In cases of feline atopic dermatitis or atopy in cats, pruritic skin diseases may result; however, signs can also include miliary dermatitis, symmetrical alopecia, and lesions of the eosinophilic granuloma complex.
In general, cognitive support diets are formulated to include nutrients that have a known role in brain development, function and/or maintenance, with the goal of improving and preserving mental processes such as attentiveness, short-term and long-term memory, learning, and problem solving. Currently, there is very little conclusive research available regarding cat cognition as standardized tests for evaluating cognitive ability are less established and less reliable than cognitive testing apparatus used in other mammalian species, like dogs. Much of what is known about feline cognition has been inferred from a combination of owner-reported behaviour, brain necropsies, and comparative cognitive neurology of related animal models. Cognition claims appear primarily on kitten diets which include elevated levels of nutrients associated with optimal brain development, although there are now diets available for senior cats that include nutrients to help slow the progression of age-related changes and prevent cognitive decline. Cognition diets for cats contain a greater portion of omega-3 fatty acids, especially docosahexaenoic acid (DHA) as well as eicosapentaenoic acid (EPA), and usually feature a variety of antioxidants and other supporting nutrients thought to have positive effects on cognition.
GS-441524 is a nucleoside analogue antiviral drug which was developed by Gilead Sciences. It is the main plasma metabolite of the antiviral prodrug remdesivir, and has a half-life of around 24 hours in human patients. Remdesivir and GS-441524 were both found to be effective in vitro against feline coronavirus strains responsible for feline infectious peritonitis (FIP), a lethal systemic disease affecting domestic cats. Remdesivir was never tested in cats, but GS-441524 has been found to be effective treatment for FIP.
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