Basenji dog

The Basenji is a breed of hunting dog. It was bred from stock that originated in central Africa. Most of the major kennel clubs in the English-speaking world place the breed in the Hound Group—more specifically, in the sighthound type. The Fédération Cynologique Internationale places the breed in group five, spitz and primitive types, and the United Kennel Club (US) places the breed in the Sighthound & Pariah Group.

The Basenji produces an unusual yodel-like sound commonly called a "baroo", due to its unusually shaped larynx. This trait also gives the Basenji the nickname "soundless dog"

Basenjis share many unique traits with pariah dog types. Basenjis, like dingoes, New Guinea singing dogs and some other breeds of dog, come into estrus only once annually—as compared to other dog breeds, which may have two or more breeding seasons every year. Both dingoes and Basenji lack a distinctive odor, and are prone to howls, yodels, and other vocalizations over the characteristic bark of modern dog breeds. One theory holds that the latter trait is the result of selecting against dogs that frequently bark—in the traditional Central African context—because barking could lead enemies to humans' forest encampments. While dogs that resemble the Basenji in some respects are commonplace over much of Africa, the breed's original foundation stock came from the old growth forest regions of the Congo Basin, where its structure and type were fixed by adaptation to its habitat, as well as use (primarily net hunting in extremely dense old-growth forest vegetation).

The name comes from the Lingala language of the Congo, mbwá na basɛ́nzi which means "village dogs".

Lineage

The Basenji is an ancient breed. It has been identified as a basal breed that predates the emergence of the modern breeds in the 19th century. Recent DNA studies based on whole-genome sequences indicate that the domestic dog is a genetically divergent subspecies of the gray wolf and was derived from a now-extinct ghost population of Late Pleistocene wolves, and the basenji and the dingo are both considered to be basal members of the domestic dog clade. "The term basal refers to a lineage that diverges early in the history of the group...and lies on a branch that originates near the common ancestor of the group."

Name

The Azande and Mangbetu people from the northeastern Congo region describe Basenjis, in the local Lingala language, as mbwá na basɛ́nzi. Translated, this means "dogs of the savages", or "dogs of the villagers". In the Congo, the Basenji is also known as "dog of the bush." The dogs are also known to the Azande of southern Sudan as Ango Angari. The word basɛ́nzi itself is the plural form of mosɛ́nzi. In Swahili, another Bantu language, from East Africa, mbwa shenzi translates to “wild dog”. Another local name is m’bwa m’kube m’bwa wamwitu, or “jumping up and down dog” a reference to their tendency to jump straight up to spot their quarry.

Characteristics

This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. (May 2013) (Learn how and when to remove this template message)

Appearance

Basenjis are small, short-haired dogs with erect ears, tightly curled tails and graceful necks. A Basenji's forehead is wrinkled, even more so when they are young or extremely excited. A Basenji's eyes are typically almond-shaped. Basenjis typically weigh about 9.1–10.9 kg (20–24 lb) and stand 41–46 cm (16–18 in) at the shoulder. They are a square breed, which means they are as long as they are tall with males usually larger than females. Basenjis are athletic dogs, and deceptively powerful for their size. They have a graceful, confident gait like a trotting horse, and skim the ground in a double suspension gallop, with their characteristic curled tail straightened out for greater balance when running at their top speed. Basenjis come in a few different colorations: red, black, tricolor, and brindle, and they all have white feet, chests and tail tips. They can also come in trindle, which is a tricolor with brindle points, a rare combination.

Temperament

The Basenji is alert, energetic, curious and reserved with strangers. The Basenji tends to become emotionally attached to a single human. Basenjis may not get along with non-canine pets. Basenjis dislike wet weather, like to climb, and can easily get over chain wire fences.

Basenjis often stand on their hind legs, somewhat like a meerkat, by themselves or leaning on something; this behavior is often observed when the dog is curious about something. Basenjis have a strong prey drive. According to the book The Intelligence of Dogs, they are the second least trainable dog.

Health

There is apparently only one completed health survey of Basenjis, a 2004 UK Kennel Club survey.

Basenjis are prone to blindness from progressive retinal atrophy (PRA) and Fanconi syndrome. They can also suffer from hypothyroidism, immunoproliferative systemic intestinal disease (IPSID), and hemolytic anemia (HA). Basenjis are also sensitive to environmental and household chemicals, which may cause liver problems.

Longevity

Basenjis in the 2004 UK Kennel Club survey had a median lifespan of 13.6 years (sample size of 46 deceased dogs), which is 1–2 years longer than the median lifespan of other breeds of similar size. The oldest dog in the survey was 17.5 years. Most common causes of death were old age (30%), urologic (incontinence, Fanconi syndrome, chronic kidney failure 13%), behavior ("unspecified" and aggression 9%), and cancer. (9%).

Among 78 live dogs in the 2004 UKC survey, the most common health issues noted by owners were dermatologic and urologic (urologic issues in Basenjis can be signs of Fanconi syndrome).

Fanconi syndrome

Fanconi syndrome, an inheritable disorder in which the renal (kidney) tubes fail to reabsorb electrolytes and nutrients, is unusually common in Basenjis. Symptoms include excessive drinking, excessive urination, and glucose in the urine, which may lead to a misdiagnosis of diabetes. Fanconi syndrome usually presents between 4 and 8 years of age, but sometimes as early as 3 years or as late as 10 years. Fanconi syndrome is treatable and organ damage is reduced if treatment begins early. Basenji owners are advised to test their dog's urine for glucose once a month beginning at the age of 3 years. Glucose testing strips designed for human diabetics are inexpensive and available at most pharmacies. Steve Gonto, M.M.Sc., Ph.D., has a 'Fanconi Disease Management Protocol for Veterinarians' that is commonly used by many veterinarians with Fanconi syndrome afflicted dogs. The current DNA test for Fanconi syndrome may be ordered from offa.org.

Fanconi DNA linkage test

In July 2007, Dr. Gary Johnson of the University of Missouri released the linked marker DNA test for Fanconi syndrome in Basenjis. It is the first predictive test available for Fanconi syndrome. With this test, it is possible to more accurately determine the probability of a dog's carrying the gene for Fanconi syndrome.

Dogs tested using this "linkage test" return one of the following statuses:

·         Probably clear/Normal

Indicates the individual has most likely inherited normal DNA from both parents. It is unlikely that Basenjis that test this way will produce affected puppies, no matter which dog they breed with.

·         Probably carrier

Indicates the individual has most likely inherited normal DNA from one parent and DNA with the Fanconi syndrome mutation from the other parent.This basenji is unlikely to develop Fanconi syndrome, but could produce puppies that do. To minimize the chances of this happening, it is recommended carriers be bred only to those that test as Probably clear/Normal for Fanconi syndrome.

·         Probably equivocal/Indeterminate

Indicates the individual's DNA contained features found in both "normal" and "carrier" Basenjis. At present it cannot be predicted whether these Basenjis are carriers or normal; however, it is unlikely that they will develop Fanconi syndrome. The safest strategy would be to treat them as “carriers” and bred to only those Basenjis that test as Probably Clear/Normal for Fanconi syndrome.

·         Probably affected

Indicates the individual is likely to develop clinical Fanconi syndrome and is likely to produce puppies with Fanconi syndrome if bred to Basenjis other than those that test as Probably Clear/Normal for Fanconi syndrome.

This linkage test is being provided as a tool to assist breeders whilst research continues towards the development of the direct Fanconi test.

The direct Fanconi DNA test has now been developed and may be ordered from the Orthopedic Foundation for Animals at http://www.offa.org/dnatesting/fanconi.html .

For more information about the linkage test, visit: Basenji Health Endowment Fanconi Test FAQ.

Other Basenji health issues

Basenjis sometimes carry a simple recessive gene that, when homozygous for the defect, causes genetic hemolytic anemia. Most 21st-century Basenjis are descended from ancestors that have tested clean. When lineage from a fully tested line (set of ancestors) cannot be completely verified, the dog should be tested before breeding. As this is a non-invasive DNA test, a Basenji can be tested for HA at any time.

Basenjis sometimes suffer from hip dysplasia, resulting in loss of mobility and arthritis-like symptoms. All dogs should be tested by either OFA or PennHIP prior to breeding.

Malabsorption, or immunoproliferative enteropathy, is an autoimmune intestinal disease that leads to anorexia, chronic diarrhea, and even death. A special diet can improve the quality of life for afflicted dogs.

The breed can also fall victim to progressive retinal atrophy (a degeneration of the retina causing blindness) and several less serious hereditary eye problems such as coloboma (a hole in the eye structure), and persistent pupillary membrane (tiny threads across the pupil).