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Tail docking is, essentially, amputation or partial amputation of a dog's tail. Along with ear docking, it is usually performed on very young puppies (typically Dobermans, German shorthaired pointers, and schnauzers of certain breeds).While there are historical reasons for this procedure, dockings today are almost always undertaken for cosmetic reasons often related to showing purebreds. Free Beastiality Porn - real animal sex fully for free. Her first beastiality sex, outdoor animal porn, amateur videos with dog! Porn Network. Beastiality Sex Bestiality Sex Gay Bestiality. Free Beastiality Porn. Beastiality sex this is sex with animals, also is names as zoophile. This site contain beastiality porn videos and stories. bbw having sex with her dog Time: Views: tags.

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Canis familiaris Linnaeus[3] [4]. The domestic dog Canis lupus familiaris when considered a subspecies of the wolf or Canis familiaris when considered a distinct species [5] is a member of the genus Canis canineswhich forms part of the wolf-like canids[6] and is the most widely abundant terrestrial carnivore. Their long association with humans has led dogs to be uniquely attuned to human behavior [18] and they are able to thrive on a starch-rich diet that would be inadequate for other canid species.

This influence on human society has given them the sobriquet of " man's best friend ". Inthe Swedish botanist and zoologist Carl Linnaeus published in his Systema Naturae the binomial nomenclature — or the two-word naming — of species.

Canis is the Latin word meaning "dog", [21] and under this genus he listed the dog-like carnivores including domestic dogs, wolves, adult dog, and jackals. He classified the domestic dog as Canis familiarisadult dog, and on the next page he classified the wolf as Canis lupus.

Ina study of mitochondrial DNA indicated that the domestic dog may have originated from multiple grey wolf populations, adult dog, with the dingo and New Guinea singing dog "breeds" having developed at a time when human populations were more isolated from each other. Christopher Wozencraft listed under the wolf Canis lupus its wild subspecies, and proposed two additional subspecies: " familiaris Linneaus, [domestic dog]" and " dingo Meyer, [domestic dog]", adult dog.

Wozencraft included hallstromi — the New Guinea singing dog — as a taxonomic synonym for the dingo. Wozencraft referred to the mDNA study as one of the guides in forming his decision. The origin of the domestic dog includes the dog's evolutionary divergence from the wolf, its domesticationand its development into dog types and dog breeds.

The dog is a member of the genus Caniswhich forms part of the wolf-like canidsand was the first species and the only large carnivore to have been domesticated. The genetic divergence between dogs and wolves occurred between 40,—20, years ago, just before or during the Last Glacial Maximum, adult dog.

Where the domestication of the dog took place remains debated, with the most plausible proposals spanning Western Europeadult dog, [9] [28] Central Asia [28] [29] and East Asia.

These adult dog groups, before going extinctwere domesticated independently into two distinct dog populations between 14, and 6, years ago. The Western Eurasian dog population was gradually and partially replaced by East Asian dogs introduced by humans at least 6, years ago. Domestic dogs have been selectively bred for millennia for various behaviors, sensory capabilities, adult dog, and physical attributes.

Dogs are highly variable in height and weight. The smallest known adult dog adult dog a Yorkshire Terrierthat stood only 6. The largest known dog was an English Mastiff which weighed The dog's senses include vision, hearing, adult dog of smell, sense of taste, touch and sensitivity to the earth's magnetic field.

Another study suggested that dogs can see the earth's magnetic field. The coats of domestic dogs are of two varieties: "double" being common with dogs as well as wolves originating from colder climates, made up of a coarse guard hair and a soft down hairor "single", with the topcoat only, adult dog. Breeds may have an occasional "blaze", stripe, or "star" of white fur on their chest or underside. Regarding coat appearance or health, the coat can be maintained or affected by multiple nutrients present in the diet, see Coat dog for more information.

There are many different shapes for dog tails : straight, straight up, sickle, curled, or cork-screw. As with many canids, adult dog, one of the primary functions of a dog's tail is to adult dog their emotional state, which can be important adult dog getting along with others. In some hunting dogs, however, the tail is traditionally docked to avoid injuries. Despite their close genetic relationship and the ability to inter-breed, there are adult dog number of diagnostic features to distinguish the gray wolves from domestic dogs.

Domesticated dogs are clearly distinguishable from wolves by starch gel electrophoresis of red blood cell acid phosphatase. Dogs generally have brown eyes and wolves almost always have amber or light colored eyes. There are many household plants that are poisonous to dogs and other mammals including begoniaPoinsettia and aloe vera. Some breeds of dogs are prone to certain genetic ailments such as elbow and hip dysplasiablindnessdeafnesspulmonic stenosiscleft palateand trick knees.

Two serious medical conditions particularly affecting dogs are pyometraaffecting unspayed females of all types and ages, and gastric dilatation volvulus bloatwhich affects adult dog larger breeds or deep-chested dogs. Both of these are acute conditions, and can kill rapidly.

Dogs are also susceptible to parasites such as fleasticksadult dog, miteshookwormstapewormsroundwormsand heartworms roundworm species that lives in the heart of dogs. A number of common human foods and household ingestibles are toxic to dogs, including chocolate solids theobromine poisoningonion and garlic thiosulphate adult dog, sulfoxide or disulfide poisoning[54] grapes and raisinsmacadamia nutsadult dog, xylitol[55] as well as various plants and other potentially adult dog materials.

Dogs can be exposed to the substance by scavenging through garbage bins or ashtrays and eating cigars and cigarettes. Signs adult dog be vomiting of large amounts e. Some other signs are abdominal pain, loss of coordination, adult dog, collapse, or death.

Theobromine is toxic to dogs because, although the dog's metabolism is capable of breaking down the chemical, the process is so slow that for some dogs even small amounts of chocolate can be fatal, especially dark chocolate. Dogs are also vulnerable to some of the same health conditions as humans, including diabetesdental and heart disease, adult dog, epilepsy, cancer, hypothyroidism, adult dog, and arthritis. Inadult dog, a study found that mixed breeds live on average 1.

The typical lifespan of dogs varies widely among adult dog, but for most the median longevity, the age at which half the dogs in a population have died and half are still alive, ranges from 10 to 13 years.

The breed with the shortest lifespan among breeds for which there is a questionnaire survey with a reasonable sample size is the Dogue de Bordeauxwith a median longevity of about 5.

The longest-lived breeds, including toy poodlesJapanese spitzBorder terriersand Tibetan spanielshave median longevities of 14 to 15 years. In domestic dogs, sexual maturity happens around six to twelve months of age for both males and females, [17] [68] adult dog this can be delayed until up to two years old for adult dog large breeds.

This is the time at which female dogs will have their first estrous cycle. They will experience subsequent estrous cycles semiannually, during which the body prepares for pregnancy. At the peak of the cycle, females will come into estrus, being mentally and physically receptive to copulation. Fertilization typically occurs 2—5 days after ovulation; 14—16 days after ovulation, the embryo attaches to the uterus, and after more adult dog the heart beat is detectable.

Dogs bear their litters roughly 58 to 68 days after fertilization[17] [71] with an average of 63 days, adult dog, although the length of gestation can vary, adult dog. An average litter consists of about six puppies[72] though this number may vary widely based on the adult dog of dog. In general, adult dog, toy dogs produce from one to four puppies in each litter, while much larger breeds may average as many as twelve.

Some dog breeds have acquired traits through selective breeding that interfere with reproduction. Male French Bulldogsfor instance, are incapable of adult dog the female. For many dogs of this breed, the female must be artificially inseminated in order to reproduce, adult dog. Neutering refers to the sterilization of animals, usually by removal of the male's testicles or the female's ovaries and uterusin order to eliminate the ability to procreate and reduce sex drive.

Because of the overpopulation adult dog dogs in some countries, adult dog, many animal control agencies, such as the American Adult dog for the Adult dog of Cruelty to Animals ASPCAadvise that dogs not intended for further breeding should be neutered, so that they do not have undesired puppies that may later be euthanized.

Spaying or castrating dogs helps keep overpopulation down. Neutering reduces problems caused by hypersexualityadult dog, especially in male dogs. A common breeding practice for pet dogs is mating between close relatives e. In a study of seven breeds of dogs Bernese mountain dogbasset houndadult dog, Cairn terrierEpagneul BretonGerman Shepherd dog, Leonbergerand West Highland white terrier it was found that inbreeding decreases litter size and survival. Mortality due to infection increased significantly with increases in inbreeding.

Dog intelligence is the ability of the dog to perceive information and retain it as knowledge for applying to solve problems. Dogs have been shown to learn by inference. A study with Rico showed that he knew the labels of over different items. He inferred the names of novel items by exclusion learning and correctly retrieved those novel items immediately and also 4 weeks after the initial exposure. Dogs have advanced memory skills. A study documented the learning and memory capabilities of a border collie, "Chaser", who had learned the names and could associate by verbal command over 1, words [ citation needed ].

Dogs are able to read and react appropriately to human body language such as gesturing and pointing, and to understand human voice commands, although a study on canine cognitive abilities found that dogs' capabilities are not more exceptional than those of other animals, such as horseschimpanzees or cats.

Dogs demonstrate a adult dog of mind by engaging in deception [ citation needed ]. An experimental study showed compelling evidence that Australian dingos can outperform domestic dogs in non-social problem-solving, adult dog, indicating that domestic dogs may have lost adult dog of their original problem-solving abilities once they joined humans.

As a result of this physical and social evolution, dogs, more than any other species, have acquired the ability to understand and communicate with humans, and they are uniquely attuned to human behaviors. These abilities are not possessed by the dog's closest canine relatives nor by other highly intelligent mammals such as great apes but rather parallel some of the social-cognitive skills of human children.

Unlike other domestic species which were primarily selected for production-related traits, dogs were initially selected for their behaviors. These gene variations were unlikely to have been the result of natural evolution, and indicate selection on both morphology and behavior during dog domestication. These genes have been shown to affect the catecholamine synthesis pathway, adult dog, with the majority of the genes affecting the fight-or-flight response [95] [96] i. Dog communication is how dogs convey information to other dogs, how they understand messages from humans, and how humans translate the adult dog that dogs are transmitting, adult dog.

Humans communicate to dogs by using vocalization, hand signals and body posture. Inan estimate of the global dog population was million. In the developing world, dogs are more commonly feral or communally owned, with pet dogs uncommon. Although dogs are the most abundant and widely distributed terrestrial carnivores, the potential of feral and free-ranging dogs to compete with other large carnivores is limited by their strong association with humans, adult dog.

Wolves kill dogs wherever they are found together. In Wisconsin wolves will often kill hunting dogs, adult dog, possibly because the adult dog are in the wolf's territory, adult dog.

Coyotes and big cats have also been known to attack dogs. Leopards in particular are known to have a adult dog for dogs, adult dog, and have been recorded to kill and consume them regardless of their size. Dogs have been described as carnivores [] [] or omnivores, adult dog. However, the dog is not simply an omnivore. More like the cat and less like other omnivores, the dog can only produce bile acid with taurineadult dog it cannot produce vitamin Dwhich it adult dog from animal flesh.

Also more like the cat, the dog requires arginine to maintain its nitrogen balance. These nutritional requirements place the dog part-way between carnivores and omnivores. As a domesticated or semi-domesticated adult dog, the dog is nearly universal among human societies.

Notable exceptions once included:. Dogs were introduced to Antarctica as sled dogsand some became nearly feral. Dogs became apex predators in Antarctica by killing prey largely penguins and posing a risk of spreading contagious diseases to seals before dogs were outlawed adult dog Antarctica in accordance with an international agreement.

The domestic dog is the first species, and the only large carnivoreknown to have been domesticated. Especially over the past years, dogs have undergone rapid phenotypic change and were formed into today's modern dog breeds due to artificial selection by humans.


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Tail docking is, essentially, amputation or partial amputation of a dog's tail. Along with ear docking, it is usually performed on very young puppies (typically Dobermans, German shorthaired pointers, and schnauzers of certain breeds).While there are historical reasons for this procedure, dockings today are almost always undertaken for cosmetic reasons often related to showing purebreds. bbw having sex with her dog Time: Views: tags. Most dogs reach sexual maturity around six months old. Sexual maturity is the physical stage at which a dog can physically sire or give birth to puppies. Having puppies may sound very adult, but if you’ve ever spent time around a six-month-old puppy, you’ll know that they’re not fully grown twodownload.tk: Elisabeth Geier.