Basenji

The Basenji is a breed of hunting dog. It was bred from stock that originated in central Africa. The Fédération Cynologique Internationale places the breed in its Spitz and primitive types. The Basenji produces an unusual yodel-like sound, due to its unusually shaped larynx. This trait also gives the Basenji the nickname barkless dog.
Basenjis share many distinctive traits with pariah dog types. Basenjis come into estrus only once annually similar to dingoes and New Guinea singing dogs, when compared with other dog breeds which may have two or more breeding seasons each year. Basenji lack a distinctive odor, and are prone to howls, yodels, and other vocalizations over the characteristic bark of modern dog breeds. The breed's original foundation stock came from the Democratic Republic of the Congo.
Name.
The Azande and Mangbetu people from the northeastern Congo region describe Basenjis, in the local Lingala language, as . 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 . The word itself is the plural form of . In Swahili, another Bantu language, from East Africa, translates to 'Savage dog'. Another local name is "m’bwa m’kube, 'mbwa wa mwitu'(Wild dog), or 'dog that jumps up and down', a reference to their tendency to jump straight up to spot their quarry.
Lineage.
The Basenji has been identified as a basal breed that predates the emergence of the modern breeds in the 19th century. DNA studies based on whole-genome sequences indicate that the basenji and the dingo are both considered to be basal members of the domestic dog clade. 
In 2021, the genome of two basenjis were assembled, which indicated that the basenji fell within the Asian spitz group. The AMY2B gene produces an enzyme that helps to digest amylase (starch). Similar to the wolf, the husky and the dingo possess only two copies of this gene, which provides evidence that they arose before the expansion of agriculture. The genomic study found that similarly, the basenji possesses only two copies of this gene.
History.
Originating on the continent of Africa, Europeans first described the type of dog the Basenji breed derives from in 1895—in the Congo. These local dogs, which Europeans identified as a distinct breed and called "basenji," were prized by locals for their intelligence, courage, speed, and silence. Some consider independent dogs such as Basenjis and Afghan Hounds more intelligent than obedient breeds because of their ability to recognize which actions benefit them, and which simply please another.
Several attempts were made to bring the breed to England, but the earliest imports succumbed to disease. In 1923, for example, Lady Helen Nutting brought six Basenjis with her from Sudan, but all six died from distemper shots they received in quarantine. It was not until the 1930s that foundation stock was successfully established in England, and then in the United States by animal importer Henry Trefflich. It is likely that nearly all the Basenjis in the Western world are descended from these few original imports. The breed was officially accepted into the AKC in 1943. In 1990, the AKC stud book was reopened to 14 new imports at the request of the Basenji Club of America. The stud book was reopened again to selected imported dogs from 1 January 2009 to 31 December 2013. An American-led expedition collected breeding stock in villages in the Basankusu area of the Democratic Republic of Congo, in 2010. Basenjis are also registered with the United Kennel Club.
The popularity of the Basenji in the United States, according to the American Kennel Club, has declined over the past decade, with the breed ranked 71st in 1999, decreasing to 84th in 2006, and to 93rd in 2011.
Characteristics.
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 it is young or extremely excited. A Basenji's eyes are typically almond-shaped. Basenjis typically weigh about and stand 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 and behavior.
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, much like cats, and will often refuse to go outside in any sort of damp conditions. They like to climb, and can easily scale chain wire/link 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, when required to do human commands (behind only the Afghan Hound). Their real intelligence manifests when they are required to actually solve problems for the sake of the dogs' own goals (such as food, or freedom).
Basenjis are highly prey driven and will go after cats and other small animals.
Health.
There is only one completed health survey of dog breeds, including the Basenji, that was conducted by the UK Kennel Club in 2004. The survey indicated the prevalence of diseases in Basenjis with dermatitis (9% of responses), incontinence and bladder infection (5%), hypothyroidism (4%), pyometra and infertility (4%).
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. The 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%).
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. A Fanconi disease management protocol has been developed that can be used by veterinarians to treat Fanconi-afflicted dogs.
Fanconi DNA test.
Beginning in 2011, the direct DNA Fanconi Test became available from the Orthopedic Foundation for Animals (OFA) and replaces the Fanconi Linked Marker Test. Results from the Fanconi Linked Marker Test will remain on the OFA website until the dogs are retested, and are indicated with the qualifier, "Probably" before the results "Clear/Normal," "Carrier," or "Affected." If a dog is retested, the direct DNA Fanconi Test results will replace the Linked Marker Test results, and will not have the word, "Probably." The DNA Fanconi Direct Test does not have an "Indeterminate" result, as this was only necessary in the Linked Marker Test, when the markers did not clearly indicate the status of the dog.
Dogs with a "carrier" status may be safely bred only to mates with a "clear/normal" test result. "Clear by parentage" is not considered recognized or acceptable when breeding an individual. More information is available on the Basenji Club of America's website - https://www.basenji.org/index.php/faq-fanconi-testing
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).