African wild dog

 "African Wild Dog"

Kingdom: Animalia

Phylum: Chordata

Class: Mammalia

Order: Carnivora

Family: Canidae

Subfamily: Caninae

Tribe: Canini

Genus: Lycaon

Species: L. pictus

Scientific name: Lycaon pictus

Conservation status: Endangered (Population decreasing)  

Mass: 22 kg (Adult)  

Habitat: Savanna 

About:-

The African wild dog (Lycaon pictus), also called the painted wolf or Cape hunting dog, is a canine native to Sub-Saharan Africa. It is the largest indigenous canine in Africa, and the only extant member of the genus Lycaon , which is distinguished from Canis by dentition highly specialized for a hyper carnivorous diet, and a lack of dewclaws. It is estimated that about 6,600 adults including 1,400 mature individuals live in 39 subpopulations that are all threatened by habitat fragmentation, human persecution and outbreaks of diseases. As the largest subpopulation probably consists of less than 250 individuals, the African wild dog is listed as endangered on the IUCN Red List since 1990. 

The African wild dog is a highly social animal , living in packs with separate dominance hierarchies for males and females. Uniquely among social carnivores, the females rather than the males disperse from the natal pack once sexually mature. The young are allowed to feed first on carcasses. The species is a specialized dirunal hunter antelopes, which it catches by chasing them to exhaustion. Like other canids, the African wild dog regurgitates food for its young, but this action is also extended to adults, to the point of being central to their social life. Its natural enemies are lions and hyenas: the former will kill the canids where possible whilst hyena's are frequent kleptoparasites.

Although not as prominent African folklore in  or culture as other African carnivores, it has been respected in several hunter-gatherer societies, particularly those of the predynastic Egyptians and the San people.

Naming:-

The English language has several names for the African wild dog, including African hunting dog, Cape hunting dog, painted hunting dog, painted dog, painted wolf, and painted lycaon. Some conservation organizations are promoting the name 'painted wolf' as a way of rebranding the species, as wild dog has several negative connotations that could be detrimental to its image. Nevertheless, the name "African wild dog" is still widely used.

Physical description:-

The African wild dog is the bulkiest and most solidly built of African canids. The species stands 60 to 75 cm (24 to 30 in) in shoulder height, measures 71 to 112 cm (28 to 44 in) in head-and-body length and has a tail length of 29 to 41 cm (11 to 16 in). Body weight of adults range from 18 to 36 kg (40 to 79 lb). On average, dogs from East Africa weigh around 20–25 kg (44–55 lb) while in southern Africa, males reportedly weighed a mean of 32.7 kg (72 lb) and females a mean of 24.5 kg (54 lb). By body mass, they are only outsized amongst other extant canids by the grey wolf species complex. Females are generally 3–7% smaller than males. Compared to members of the genus Canis, the African wild dog is comparatively lean and tall, with outsized ears and lacking dewclaws. The middle two toepads are usually fused. Its dentition also differs from that of Canis by the degeneration of the last lower molar, the narrowness of the canines and proportionately large premolars, which are the largest relative to body size of any carnivore other than hyenas. The heel of the lower caenassial M1 is crested with a single, blade-like cusp, which enhances the shearing capacity of the teeth, thus the speed at which prey can be consumed. This feature, termed "trenchant heel", is shared with two other canids: the Asian dhole and the South American bush dog. The skull is relatively shorter and broader than those of other canids. The fur of the African wild dog differs significantly from that of other canids, consisting entirely of stiff bristle-hairs with no underfur. It gradually loses its fur as it ages, with older individuals being almost naked. Color variation is extreme, and may serve in visual identification, as African wild dogs can recognize each other at distances of 50–100 m. Some geographic variation is seen in coat color, with northeastern African specimens tending to be predominantly black with small white and yellow patches, while southern African ones are more brightly colored, sporting a mix of brown, black and white coats. Much of the species' coat patterning occurs on the trunk and legs. Little variation in facial markings occurs, with the muzzle being black, gradually shading into brown on the cheeks and forehead. A black line extends up the forehead, turning blackish-brown on the back of the ears. A few specimens sport a brown teardrop-shaped mark below the eyes. The back of the head and neck are either brown or yellow. A white patch occasionally occurs behind the fore legs, with some specimens having completely white fore legs, chests and throats. The tail is usually white at the tip, black in the middle and brown at the base. Some specimens lack the white tip entirely, or may have black fur below the white tip. These coat patterns can be asymmetrical, with the left side of the body often having different markings from that of the right.

Behaviour:-

The African wild dog has very strong social bonds, stronger than those of sympatric lions and spotted heynas; thus, solitary living and hunting are extremely rare in the species. It lives in permanent packs consisting of two to 27 adults and yearling pups. The typical pack size in Kruger National Park and the Maasai Mara is four or five adults, while pack in Moremi and Selous contain eight or nine. However, larger packs have been observed and temporary aggregations of hundreds of individuals may have gathered in response to the seasonal migration of vast springbok herds in Southern Africa. Males and females have separate dominance hierarchies, with the latter usually being led by the oldest female. Males may be led by the oldest male, but these can be supplanted by younger specimens; thus, some packs may contain elderly former male pack leaders. The dominant pair typically monopolises breeding. The species differs from most other social species in that males remain in the natal pack, while females disperse (a pattern also found in primates such as gorillas, chimpanzees, and red colobuses). Furthermore, males in any given pack tend to outnumber females 3:1. Dispersing females join other packs and evict some of the resident females related to the other pack members, thus preventing inbreeding and allowing the evicted individuals to find new packs of their own and breed. Males rarely disperse, and when they do, they are invariably rejected by other packs already containing males. Although arguably the most social canid, the species lacks the elaborate facial expressions and body language found in the grey wolf, likely because of the African wild dog's less hierarchical social structure. Furthermore, while elaborate facial expressions are important for wolves in re-establishing bonds after long periods of separation from their family groups, they are not as necessary to African wild dogs, which remain together for much longer periods. 

African wild dog populations in East Africa appear to have no fixed breeding season, whereas those in Southern Africa usually breed during the April–July period. During estrus, the female is closely accompanied by a single male, which keeps other members of the same sex at bay. The copulatorytie characteristic of mating in most canids has been reported to be absent or very brief (less than one minute) in African wild dog, possibly an adaptation to the prevalence of larger predators in its environment. The gestation period lasts 69–73 days, with the interval between each pregnancy being 12–14 months typically. The African wild dog produces more pups than any other canid, with litters containing around six to 16 pups, with an average of 10, thus indicating that a single female can produce enough young to form a new pack every year. Because the amount of food necessary to feed more than two litters would be impossible to acquire by the average pack, breeding is strictly limited to the dominant female, which may kill the pups of subordinates. After giving birth, the mother stays close to the pups in the den, while the rest of the pack hunts. She typically drives away pack members approaching the pups until the latter are old enough to eat solid food at three to four weeks of age. The pups leave the den around the age of three weeks and are suckled outside. The pups are weaned at the age of five weeks, when they are fed regurgitated meat by the other pack members. By seven weeks, the pups begin to take on an adult appearance, with noticeable lengthening in the legs, muzzle, and ears. Once the pups reach the age of eight to 10 weeks, the pack abandons the den and the young follow the adults during hunts. The youngest pack members are permitted to eat first on kills, a privilege which ends once they become yearlings.

Ratio male/female:-

Packs of African wild dogs have a high ratio of males to females. This is a consequence of the males mostly staying with the pack whilst female offspring disperse and is supported by a changing sex-ration in consecutive litters. Those born to maiden bitches contain a higher proportion of males, second litters are half and half and subsequent litters biased towards females with this trend increasing as females get older. As a result, the earlier litters provide stable hunters whilst the higher ratio of dispersals amongst the females stops a pack from getting too big.

Threats:-

The African wild dog is primarily threatened by habitat fragmentation, which results in human-wildlife conflict, transmission of infectious diseases and high mortality rates. Surveys in the Central African Republic's Chinko area revealed that the African wild dog population decreased from 160 individuals in 2012 to 26 individuals in 2017. At the same time, transhumans pastoralists  from the border area with Sudan moved in the area with their livestock. Rangers confiscated large amounts of poison and found multiple lion cadavers in the camps of livestock herders. They were accompanied by armed merchants who also engage in poaching large herbivores, sale of bushmeat and trading lion skins.

In culture:-

Artistic depictions of African wild dogs are prominent on cosmetic palettes and other objects from Egypt’s predynastic period, likely symbolizing order over chaos, as well as the transition between the wild (represented by the African golden wolf) and the domestic (represented by the dog). Predynastic hunters may have also identified with the African wild dog, as the Hunters Palette shows them wearing the animals' tails on their belts. By the dynastic period, African wild dog illustrations became much less represented, and the animal's symbolic role was largely taken over by the wolf. 

According to Enno Littmann, the people of Ethiopia’s Tigray Region believed that injuring a wild dog with a spear would result in the animal dipping its tail in its wounds and flicking the blood at its assailant, causing instant death. For this reason, Tigrean shepherds would repel wild dog attacks with pebbles rather than with edged weapons. 

The African wild dog also plays a prominent role in the mythology of Southern Africa's San people. In one story, the wild dog is indirectly linked to the origin of death, as the hare is cursed by the moon to be forever hunted by African wild dogs after the hare rebuffs the moon's promise to allow all living things to be reborn after death. Another story has the god Cagn taking revenge on the other gods by sending a group of men transformed into African wild dogs to attack them, though who won the battle is never revealed. The San of Botswana see the African wild dog as the ultimate hunter and traditionally believe that shamans and medicine men can transform themselves into wild dogs. Some San hunters will smear African wild dog bodily fluids on their feet before a hunt, believing that doing so will give them the animal's boldness and agility. Nevertheless, the species does not figure prominently in San rock art, with the only notable example being a frieze in Mount Erongo showing a pack hunting two antelopes. 

The Ndebele have a story explaining why the African wild dog hunts in packs: in the beginning, when the first wild dog's wife was sick, the other animals were concerned. An impala went to Hare, who was a medicine man. Hare gave Impala a calabash of medicine, warning him not to turn back on the way to Wild Dog's den. Impala was startled by the scent of a leopard and turned back, spilling the medicine. A zebra then went to Hare, who gave him the same medicine along with the same advice. On the way, Zebra turned back when he saw a black mamba, thus breaking the gourd. A moment later, a terrible howling is heard: Wild Dog's wife had died. Wild Dog went outside and saw Zebra standing over the broken gourd of medicine, so Wild Dog and his family chased Zebra and tore him to shreds. To this day, African wild dogs hunt zebras and impalas as revenge for their failure to deliver the medicine which could have saved Wild Dog's wife.

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