Funny Cat Pictures With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

Funny Cat Pictures

Source:- Google.com.pk
Cats have excellent night vision and can see at only one sixth the light level required for human vision.[54]:43 This is partly the result of cat eyes having a tapetum lucidum, which reflects any light that passes through the retina back into the eye, thereby increasing the eye's sensitivity to dim light.[73] Another adaptation to dim light is the large pupils of cats' eyes. Unlike some big cats, such as tigers, domestic cats have slit pupils.[74] These slit pupils can focus bright light without chromatic aberration, and are needed since the domestic cat's pupils are much larger, relative to their eyes, than the pupils of the big cats.[74] Indeed, at low light levels a cat's pupils will expand to cover most of the exposed surface of its eyes.[75] However, domestic cats have rather poor color vision and (like most non-primate mammals) have only two types of cones, optimized for sensitivity to blue and yellowish green; they have limited ability to distinguish between red and green.[76] A 1993 paper found a response to mid-wavelengths from a system other than the rods which might be due to a third type of cone. However, this appears to be an adaptation to low light levels rather than representing true trichromatic vision.[77]

Cats have excellent hearing and can detect an extremely broad range of frequencies. They can hear higher-pitched sounds than either dogs or humans, detecting frequencies from 55 Hz up to 79 kHz, a range of 10.5 octaves; while humans can only hear from 31 Hz up to 18 kHz, and dogs hear from 67 Hz to 44 kHz, which are both ranges of about 9 octaves.[78][79] Cats do not use this ability to hear ultrasound for communication but it is probably important in hunting,[80] since many species of rodents make ultrasonic calls.[81] Cat hearing is also extremely sensitive and is among the best of any mammal,[78] being most acute in the range of 500 Hz to 32 kHz.[82] This sensitivity is further enhanced by the cat's large movable outer ears (their pinnae), which both amplify sounds and help a cat sense the direction from which a noise is coming.[80]

Cats have an acute sense of smell, which is due in part to their well-developed olfactory bulb and also to a large surface of olfactory mucosa, in cats this mucosa is about 5.8 square centimetres (0.90 sq in) in area, which is about twice that of humans and only 1.7-fold less than the average dog.[83] Cats are very sensitive to pheromones such as 3-mercapto-3-methylbutan-1-ol,[84] which they use to communicate through urine spraying and marking with scent glands.[85] Cats also respond strongly to plants that contain nepetalactone, especially catnip, as they can detect that substance at less than one part per billion.[86] This response is also produced by other plants, such as silver vine (Actinidia polygama) and the herb valerian; it may be caused by the smell of these plants mimicking a pheromone and stimulating cats' social or sexual behaviors.[87]

Cats have relatively few taste buds compared to humans. Domestic and wild cats share a gene mutation that keeps their sweet taste buds from binding to sugary molecules like carbohydrates, leaving them with no ability to taste sweetness.[88] Their taste buds instead respond to amino acids, bitter tastes and acids.[89]

To aid with navigation and sensation, cats have dozens of movable vibrissae (whiskers) over their body, especially their face. These provide information on the width of gaps and on the location of objects in the dark, both by touching objects directly and by sensing air currents; they also trigger protective blink reflexes to protect the eyes from damage.[54]:47
Health
Main article: Cat health

The average life expectancy for male indoor cats at birth is around 12 to 14 years,[90] with females usually living a year or two longer.[91] However, there have been reports of cats reaching into their 30s,[92] with the oldest known cat, Creme Puff, dying at a verified age of 38.[93] Feline life expectancy has increased significantly in recent decades.[94] Having a cat neutered or spayed confers some health benefits, since castrated males cannot develop testicular cancer, spayed females cannot develop uterine or ovarian cancer, and both have a reduced risk of mammary cancer.[95] The lifespan of feral cats is hard to determine accurately, although one study reported a median age of 4.7 years, with a range between 0 to 8.3 years.[96]
Diseases

Cats can suffer from a wide range of health problems, including infectious diseases, parasites, injuries and chronic disease. Vaccinations are available for many of these diseases, and domestic cats are regularly given treatments to eliminate parasites such as worms and fleas.
Poisoning

In addition to obvious dangers such as rodenticides, insecticides and herbicides, cats may be poisoned by many chemicals that are usually considered safe by their human guardians.[97] This is because their livers are less effective at some forms of detoxification than those of many other animals, including humans and dogs.[35][98] Some of the most common causes of poisoning in cats are antifreeze and rodent baits.[99] It has also been suggested that cats may be particularly sensitive to environmental pollutants.[97][100] When a cat has a sudden or prolonged serious illness without any obvious cause, it is possible that it has been exposed to a toxin.

Many human medicines should never be given to cats. For example, the painkiller paracetamol (also called acetaminophen, sold as Tylenol and Panadol) is extremely toxic to cats: even very small doses need immediate treatment and can be fatal.[101][102] Even aspirin, which is sometimes used to treat arthritis in cats, is much more toxic to them than to humans[102] and must be administered cautiously.[97] Similarly, application of minoxidil (Rogaine) to the skin of cats, either accidentally or by well-meaning guardians attempting to counter loss of fur, has sometimes been fatal.[103] Essential oils can be toxic to cats and there have been reported cases of serious illnesses caused by tea tree oil, including flea treatments and shampoos containing it.[104]

Other common household substances that should be used with caution around cats include mothballs and other naphthalene products.[97] Phenol-based products (e.g. Pine-Sol, Dettol (Lysol) or hexachlorophene)[97] are often used for cleaning and disinfecting near cats' feeding areas or litter boxes but these can sometimes be fatal.[105] Ethylene glycol, often used as an automotive antifreeze, is particularly appealing to cats, and as little as a teaspoonful can be fatal.[106] Some human foods are toxic to cats; for example chocolate can cause theobromine poisoning, although (unlike dogs) few cats will eat chocolate.[107] Large amounts of onions or garlic are also poisonous to cats.[97] Many houseplants are also dangerous,[108] such as Philodendron species and the leaves of the Easter lily (Lilium longiflorum), which can cause permanent and life-threatening kidney damage.[109]

Permethrin is approved for small animal flea control, large animal topical fly control, crops, ornamental plants and human use. The compound is found in shampoos, dips, foggers, spot-ons, and sprays for small animal use but can be toxic to cats in very small doses. Despite this, it is often still marketed for cat flea control in the form of powders or collars. The lethal dose can be as low as 10 mg/kg, and collars contain up to 18% or 460 mg.[110][111]
Behavior
See also: Cat behavior, Cat communication, and Cat intelligence

Free-ranging cats are active both day and night, although they tend to be slightly more active at night.[112][113] The timing of cats' activity is quite flexible and varied, which means that house cats may be more active in the morning and evening (crepuscular behavior), as a response to greater human activity at these times.[114] Although they spend the majority of their time in the vicinity of their home, housecats can range many hundreds of meters from this central point, and are known to establish territories that vary considerably in size, in one study ranging from 7 to 28 hectares (17–69 acres).[113] Cats conserve energy by sleeping more than most animals, especially as they grow older. The daily duration of sleep varies, usually 12–16 hours, with 13–14 being the average. Some cats can sleep as much as 20 hours in a 24-hour period. The term "cat nap" for a short rest refers to the cat's tendency to fall asleep (lightly) for a brief period. While asleep, cats experience short periods of rapid eye movement sleep often accompanied by muscle twitches, which suggests that they are dreaming.

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids

With Captions With Guns With Quotes Without Captions With Words With Sayings Tumblr Birthday For Kids