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Paper Abstract: Life of wild pack dogs, emphasizing hunting techniques & group dynamics. Paper Introduction: The colorfully spotted African Hunting Dog (Lycaon pictus) often attack a complete region, destroying far more game than they can ever eat, and can depopulate whole areas of grazing animals (Grzimek, 1990, p. 133). The dogs, who hunt in packs, can outrun even gazelles. This is because one dog will chase the quarry until exhausted, then the next dog from the pack takes over. Watching hunting dogs on their hunt is not difficult because they do not mind being watched. In the Serengeti and the Ngorongoro Crater in Tanzania, where game is plentiful, the dogs hunt only from 6:30 to 8:00 a.m., and from 6:00 to 8:00 p.m. They usually spend their day in their caverns, which were probably dug by aardvarks or wart hogs, or in the shade of trees in small groups (Grzimek, 1990, p. 133). If a single animal has Text of the Paper: The entire text of the paper is shown below. However, the text is somewhat scrambled. We want to give you as much information as we possibly can about our papers and essays, but we cannot give them away for free. In the text below you will find that while disordered, many of the phrases are essentially intact. From this text you will be able to get a solid sense of the writing style, the concepts addressed, and the sources used in the research paper. 58).In the Genghis pack, studied by James Malcolm and Hugo van Lawick, the dogshabitually hunted zebras, but most packs will not bother these dangerous,biting and kicking animals (see below). At their daily kills, the adultsswallow the meat and rush back to the den with bloated stomachs. After a successful hunt, theolder dogs returned to the den and regurgitated meat for the beggingyoungsters and the older dogs who had been left behind to stand guard.Before leaving on a new hunt, the adult dogs ran around with ears straightback, nose jutting forward, dancing toward one another. The nine months out of the year that the dogs are not breeding aregiven over to nomadism. 133).The dogs, who hunt in packs, can outrun even gazelles. One group observedby Kuhme for a period of weeks in the Serengeti consisted of six males andtwo bitches. 139). The dogs can maintainspeeds of 3 miles per hour for several miles (Grzimek, 199 , p. 139). It is as if each dog keeps an eyeon the prospects for success of the others, and allows his quarry to escapeas soon as he notices that another dog is having better luck (Grzimek,199 , p. NaturalHistory, pp. Wildebeest and wart hog were hunted less successfully (31percent and 14 percent, respectively), and no zebra or topi were killedduring the period of observation. Contrary to what has been generally assumed, panic does not erupt inthe herd of the quarry animals when a pack of hunting dogs trot towardthem. In the late eighties, there was onepack for a territory that ranged over 95 square miles. 135). For example, similar tothe Aitong pack, Schaller (1972) reported that 95 percent of 65 morninghunts and 81 percent of 47 evening hunts, or 89 percent of hunts overall,were successful. The quarry has little chance of escaping. In common with all the larger mammals, wild dogs are suffering fromhabitat loss due to encroaching human settlement and agriculture. New York: McGraw-Hill PublishingCompany.Lamprecht, J. (1975). Pursuits of impala andThomson's gazelle most often were successful (8 percent in complete chasesof individual animals and 68 percent in herd chases of fawns and olderanimals). Another reason why wild dog populations have declined is because ofdisease. In addition, the Aitong pack rarely had to contend with more than onespotted hyena at a killer (Fuller & Kat, 199 ), competition being anotherpotential evolutionary factor shaping the social structure of wild dogs(Lamprecht, 1981). The dogs,however, have not been found to hunt cows and goats herded by the Masai,even when they failed to capture gazelles, wildebeests, or impalas(Fanshawe, 1989, p. During the hunt, the dogs that follow the leaders of the pack blockother avenues of escape that the quarry might take if he chooses to changedirection, and in this way, they find themselves near the head of the pack,or possibly at its head. 64). Later, as the dry season reduces the nutritiousgrass, the wildebeests migrate north to Kenya and the Masai Mara, and thedogs hunt Thomson's gazelles. A later study observedhunting groups of one to three dogs, four dogs, and five to 13 dogs chase131 adult Thomson's gazelles. Essentially, dogs once occurredwidely south of the Sahara, with a partiality to habitats that allowed themto range from semidesert to montane country, almost everywhere, outside ofdense forests. African Journal of Ecology, 28, 33 -35 .Grzimek, B. 66). This is because onedog will chase the quarry until exhausted, then the next dog from the packtakes over. Thisabrupt change (membership dropped from 28 to 21 on one particular day) inpack size, composition, and hunting experience apparently did not affectcapture rates of Thomson's gazelles or other ungulates (Fuller & Kat, 1993,p. Also, the relatively high capture success by the Aitong pack, bothby species and overall, likely reflected the large size of the pack. According to another study, in the Serengeti, African hunting dogspreferred prey changes through the year. One of them had 11 whelps approximately three weeks old andthe other had whelps still in the cavern. According to astudy by Robert Wayne, an authority on canid genetics, wild dogs may, likecheetahs, already be depauperate genetically. Kuhme, in his study of the Serengeti dogs, found that unlikemany other social creatures, the African hunting dog appear to have no realauthority over one another, and no clear-cut social hierarchy. In order to obtain accurate date, one yearling male and one yearlingfemale were immobilized and fitted with radiocollars. In this study, hunting success was calculated as the proportion ofsuccessful pursuits by the entire pack, but often single dogs or smallgroups chased different animals simultaneously. During the rains of November toMarch, when the wildebeest migration rolls out onto the plains and the cow-beests give birth in the thousands, the new calves are easy prey. Others, like those of Samburu District in Kenya, exist half in andhalf out of reserves and are always at risk of conflict with cattleranchers. 133). Remote populations are barelysurviving, with the remotest of all possibly being the dogs of Niokolo-KobaNational Park in Senegal, an island of dogs, virtually the last in westernAfrica. Untilthe pioneering studies of Hugo van Lawick and Jane Goodall made public thewild dogs' engaging, cooperative nature, people persecuted the species.Many people found their habit of disemboweling their prey abhorrent andtried to protect domestic herds by annihilating the dogs. Nor wasthe success of the hunt hampered by the presence of the researchers. (1981). At the height of the wild dog studies of the seventies, as many as 12packs haunted the shortgrass plains of the Serengeti. Further research is needed to understand theepidemiology of wild dogs, but their intense licking, nuzzling socialityguarantees that the least contagion will spread throughout a pack.Moreover, their nomadic wanderings bring them regularly into contact withdomestic dogs, a certain source of sickness. More often,the various hunts will then become one. The study of the Aitong pack provided no direct quantitative supportpertaining to the evolution of communal hunting, precisely because the packwas large, prey was abundant, and competitors were scarce. African hunting dog. 465). (1991, May). A large hyena being attacked by several dogs usually sitsdown, yelps, growls, and snaps over its shoulder without much result.Rarely, does it lie down and stop resisting. Throughout the denning, play occupies a central place in the pups'lives. In other situations, usually whenthe dogs are pursuing large herds, the pack runs up to a group of animalsbriefly and either stands still, or proceeds slowly and watches todetermine exactly which way the herd is running. Among the gnus and otherlarge grazing animals, only the calves and younger animals are caught bythe dogs. The number of experienced hunters seemingly should affect huntingsuccess of the pack, but the researchers did not document such an effect(perhaps as a consequence of the small sample). 133-139). When fourAfrican hunting dogs attacked a young hyena in the Serengeti, they weredriven off by 11 hyenas who came to its aid. They are also somewhat heavier andstronger than those in the eastern part of Africa (Grzimek, 199 , p. It is usual for animals to hunt animals smaller or no larger than thepredator. When the leader starts chasing a particular animal,the other dogs follow his example and will chase after the same animal,until it is either killed or escapes. Since 1985, Lory Frame and John Fanshawe have conducted a survey ofthe species' status throughout Africa. Also unlikecheetahs, the dogs do not depend on surprise for their hunting success; ifdetected, they continue with their hunt--but the dogs must feed quickly toavoid losing their prey to other animals, such as lions or spotted hyenas. If pack size reflected the number ofexperienced hunters, there did not appear to be any increase in successwith increased group size. Humanencroachment and disease are some of the reasons for this decline.However, vaccinating the dogs is still a controversial topic. Journal of Mammalogy, pp. Any dog can assume the role of hunt leader and allthe dogs participate in the feeding of meat to the pack's pups. If they are frightened, they bark briefly and deeply(Grzimek, 199 , p. 134). Farther south in Tanzania, in the bushed reserves and parks, such asRuaha and Mikumi, impalas are the most regular prey species hunted. (199 ). Intuitively, opportunities for successful capture are increased withincreased prey density, and in the Aitong pack's range prey densities werehigh. (1972). Theentire hunt only takes an average of three to five minutes and covers anarea of .6 to 1.5 miles. Otherwise, the lead dog will chase after thegazelles, who can run as fast as 33 miles per hour. Allen Reich, who studied wilddogs in South Africa's Kruger National Park in the seventies, recorded afemale mating with her father, so inbreeding can occur. The pack trotsinconspicuously through an area, staying as close to the quarry aspossible. However, larger groups were more successful inhunting wildebeest than were smaller groups (Fuller & Kat, 1993, p. They usually spend their day in theircaverns, which were probably dug by aardvarks or wart hogs, or in the shadeof trees in small groups (Grzimek, 199 , p. Hyenas, however, will notflee to their caverns; even youngsters prefer to seek refuge in the densegrowth by a brook, where dogs do not follow them (Grzimek, 199 , p. Most times these pursuits lasted for 1 meters, but predationattempts on young fawns or hares clearly were shorter than this. Inother areas of Africa, the dogs hunt medium-sized antelopes, such as thekudu, puku, or lechwe. Apursuit or chase was identified by the increased change in gait orientedtoward prey, customarily by dogs appearing to be hunting (for example, dogswalking or trotting purposefully or having their heads held low and earslaid back). Thissuggests that food acquisition was not necessarily a factor influencinggregariousness or sociality, as has been proposed (Lamprecht, 1981). Radio marked dogs were located usinga hand-held Yagi antenna before they left their nighttime rest site, thenfollowed by a 4-wheel drive vehicle while they hunted. 61). In thegreatest joy, they rolled on their backs and kicked their legs in the air.They make chirping, chattering noises when they greet each other, wheneverthey are excited at the start of a hunt, when they bring their victim down,and when eating meat. In this way, the young, the sick, and theweak obtain their share of the quarry (Grzimek, 199 , p. Dogs in danger. 66). The colorfully spotted African Hunting Dog (Lycaon pictus) oftenattack a complete region, destroying far more game than they can ever eat,and can depopulate whole areas of grazing animals (Grzimek, 199 , p. 56-67.Ferrell, J.E. 134). However, as soon as the dogs run instead of walking ortrotting, all quarry animals within a radius of several hundred yards willusually run away as fast as possible (Grzimek, 199 , p. When small, they play close to the den, hemmed in by the naturalboundaries of the den. These results may reflect ways dogs hunt different prey, as well asdifferences in prey age and sex composition, distribution, and abundance.For example, young Thomson's and Grant's gazelles and wildebeest werecaptured on 75-1 percent of attempts versus 49-66 percent for olderanimals. Variation in hunting abilities or preferences of individual dogs mayinfluence success, as well. Any further diminishing ofthe species' gene pool can only weaken its chances of survival (Fanshawe,1989, p. This low level of wild dog-hyena interaction may have been due to the low density of hyenas, or thehigh density of prey, or because of the large size of the wild dog pack. If a packattacks a hippopotamus or even an elephant however, it is usually in play(Grzimek, 199 , p. Those animals that are closest to the dogs usually trot or galloprather slowly alongside, turn, and then watch the dogs, who continue theircourse. 58). Hyenas were present at 41 percent of the kills, but one-half the time only one individual was present. At Aitong, impalas were relatively abundant and dogs often killedthem. Hunting dogs attack their quarry only by sight and not be smell.They do not pay attention to the wind direction, and unlike lions orleopards, they do not try to take advantage of cover. In conclusion, the wild dogs of Africa are an extremely social andequalitarian species. They do nottry to intimidate one another, or out do each other; on the contrary, theysubordinate their own roles. In the Serengeti and the Ngorongoro Crater inTanzania, where game is plentiful, the dogs hunt only from 6:3 to 8: a.m., and from 6: to 8: p.m. In 1987, the Director of Game in Tanzania,recognizing a crisis in wild dog habitats, placed an indefinite moratoriumon the hunting of wild dogs. In Grzimek's Encyclopediaof Mammals, Vol. 28). Individual dogs do nothunt alone. When this happens, they may fail to mate or they may stay athome and breed with their close relatives. Discover, p. Only at 12 to 14 months do they begin to huntproficiently, and until then, they are totally dependent on the experiencedadults' ability to kill sufficient prey for the pack (Fanshawe, 1989, p.65). More than 6 percent of the prey of hunting dogs in the NgorongoroCrater and on the Serengeti Plains are the small Thomson's gazelles; onlyone in 1 is one of the larger Grant's gazelles. Mammal Review, 11, 169-179.Malcolm, J.R., & van Lawick, H. Zoologist Wolf-Dietrich Kuhmewitnessed how one impatient hyena touched a dog's face and whimpered in afriendly way. ReferencesFanshawe, J.H. The dogpacks usually den then, confident of sufficient food to rear a litter(Fanshawe, 1989, p. Presumably,that was the reason why it was taken as a certainty that hunting dogsrelieved each other when they hunted, that rested dogs that had followedthe pack slowly rushed forward when the leader of the pack grew tired. Largesize of the pack increased the chances of capture per pack hunt, andindeed, five of 37 pack hunts of Thomson's gazelle in the Aitong studyresulted in two to three simultaneous kills. Serengeti's painted wolves. Overall, 51 percent of pursuits of ungulates weresuccessful; however, the dogs captured at least one prey animal on 92percent of 24 morning hunts and 81 percent of 16 evening hunts, or 88percent of hunts overall (Fuller & Kat, 199 ), pp. Later, three 11-month-old pups were similarly marked. The quarry is caught by behind, usually by the legs or by thighs orsometimes on the ventral side. When the rains come, thewildebeests, and the cycle of grass growth, new birth, and death renews. It was hypothesized thatcapture success would be greatest for the smallest or youngest and the mostnumerous prey species, and because of high density of prey in the area,that overall success also would be relatively high compared with otherstudies. While arecent study suggests that hunting success is not related to a reduction inpack size, these animals are experiencing a decline in their populationwhich many believe will be detrimental to their survival. 62) If a dog does become isolated, it brings its headnear the ground and calls repeatedly in a hollow bell-like tone.Immediately afterward, it holds its head high and listens attentively.Within five minutes, the entire pack usually arrives (Grzimek, 199 , p.138). Another study also reported similar age-specific differences inhunting success, as well as selection for adult male versus femaleThomson's gazelles (Fuller & Kat, 1993, p. Springhare and brown hare (and on threeoccasions Thomson's gazelles less than two months old) were pursuedopportunistically when they bolted from cover; even these chases sometimeswere unsuccessful. They fled because they saw humans nearby. Zebras and adult gnus show little fear of African hunting dogs andeven threaten them, although zebras have been known to be killed by them.Van Lawick was able to observe such occurrences repeatedly. Then it may be that theypursue a single animal, or they trot off and repeat the same tactic withanother herd. Notes on wild dogs (Lycaonpictus) hunting zebras. A range of diseases, including rabies, distemper, parvovirus, andbabesia can strike them. 464). However, abrupt changes inpack size and composition had no detectable change in hunting success rate,and in fact, daily per capita consumption rates remained constant. Chicago: University of Chicago Press.----------------------- 9 If hyenas become too bothersome at a kill, the dogs mayattack them. In addition, during the hunts, the pack oftensnares hares, gazelle fawns, and other small prey (Fanshawe, 1989, p. One risk of the chaos generated by wild dog hunts is that the dogswill be separated. 138). Later when they learn to tackle the low rim of theden, they will explore the surrounding crevices. No affects of theresearchers presence, such as avoidance behavior, was observed. If the quarry is running at a distance over 96 feet, the dogswill generally not follow. The daily move in search of food stresses thepack, and although religiously allowed to feed at first, the younger dogsface a hard time. 28Fuller, T.K., & Kat, P.W. 466). The African hunting dogs behave differently toward hyenas. Sometimes thehyenas wait nearby for hours until resting dog packs begin to hunt. InSouth Africa, where game has become rare, dogs often cover wide expanses ofterritory and attack larger game. During the denning time, after the litters are born, female dogs suckletheir young outside their subterranean den. (199 ). Watching hunting dogs on their hunt is not difficult because they donot mind being watched. Only if a pack has had a few fruitless hunts in succession, or ifit has been hunting in the same area for a long time are the hunted animalsgripped with fear. Some people believe that thewild dogs should be vaccinated against these diseases, but other thinkhumans should not interfere with nature (Ferrell, 1991, p. Any dog within the pack may assume any social role, except, ofcourse, suckling the young. 466). Serengeti lion: A study of predator- preyrelations. Onoccasion hyenas even run around among the lounging dogs, consuming lumps ofexcretement which they seem to enjoy. The African dogs are only equipped to run and do not possess the pawsand talons of lions or leopards, or powerful shoulder or neck muscles withwhich they break a victim's neck. One dog licksanother's face and inserts his nose into the corner of the other's mouth.As it does so, it crouches and bends its legs to reduce its apparent size,and it raises its head high. Of 28hunts observed in the Ngorongoro Crater, 25 caught the quarry. The pups are quickly weaned from their mother'smilk and are switched to a meat diet. During this study, the pack was reduced from 29 to 19, as severalolder pack members died and at least six yearling dogs dispersed. 345-35 ). Capture success of zebras was relatively highin the Serengeti, where one pack seemed to specialize in killing zebras(Malcolm & van Lawick, 1975). After 1 weeks, the pupsare no longer clumsy, their faces have begun to lengthen, their eyes havecleared, and their coat pattern has begun to brighten. 466). Since then, thenumbers have declined drastically. The scarcity ofpacks means that when young females emigrate to seek breedingopportunities, which they do at two to three years of age, they may notfind mates. Most likely as a result of the variation in prey and selection, packsize and composition, and individual hunting abilities, overall huntingsuccess (all prey species combined) has varied widely among other studies,with the Aitong pack correlating those results. Withtourists and researchers a part of their lives, the dogs have lost theirfear of vehicles, and, as a result, some have been hit by cars. Movements, activities, and preyrelationships of African wild dogs (Lycaon pictus) near Aitong,southwestern Kenya. At this stage, ifsufficient prey is available, a pack will stay put for three months ormore. The function of social hunting in largerterrestrial carnivores. Although the African hunting dog has long been noted as an efficienthunter, its species-specific hunting success has seldom been quantitativelydocumented (Fuller & Kat, 1993, p. When two groups from one pack rejoinafter being separated from each other for a while, or when the animalsbecome active after a rest, they greet one another. Unlike lions, who often eat prey left byothers, African hunting dogs eat only prey they have taken themselves. The pupssoon learn to beg from any returning dog, whining and pressing their nosesinto the adult's face and mouth, for which they will soon be rewarded withregurgitated meat (Fanshawe, 1989, p. If a single animal hasan urge to hunt, it joins a group and engages them in play. Recently, however, one study ofthe population dynamics of wild dongs in southwestern Kenya, at Aitong,investigated movements, activities, and prey relationships of a large pack(19-29) in an area with abundant ungulates. 139). Now, however, they are gone from almost all but the largestprotected areas, like the Serengeti, Zimbabwe's Hwange National Park,Boswana's Okavango Delta, and Kruger Park. Sometimes, dogs in a given pack split up and undertakeseveral simultaneous hunts once they have set a herd in motion.Occasionally, two such hunts will be successful, particularly at the timethe gnus are born, when the dogs strike out after the calves. If one dog wants something from another dog,it belittles itself by acting humbly. However, the young are fed regurgitated meatby all members of the group including even the males. Hunting inthe Serengeti is less successful, according to behavioral scientist Hugovan Lawick, who studied dogs in that region (Grzimek, 199 , p. For example, when the dogs are chasing a gazelle,which generally criss-cross the terrain in a zig-zag pattern when they arechased, or run in a wide circle, several different dogs can lead the pack,because each one takes up the pursuit along part of the way. It was not possible tomonitor each chase, so a pack hunt was deemed successful if any chase wassuccessful; this resulted in a maximum estimate of hunting success. When the vanguard of a hunting dog pack have brought an animal down,the dogs are frequently driven off by nearby hyenas, but they can oftenreclaim their prize when the rest of the pack arrives. 464-467.Fuller, T.K., & Kat, P.W. Most other observations ofhunting success of wild dogs in the eastern part of Africa have occurred inopen grasslands, but impala generally occur in bush and mixed habitat.Impala are the major prey of wild dogs in southern Africa, and perhaps theyare relatively easier for wild dogs to kill, when available, in densehabitat. They licked eachother's lips, even the bitches' teats, and like children, urinated. Besides killing small and numerous Thomson's gazelles, the pack alsoseemed to be proficient in killing impalas. In September and October, when the plainsare completely dry, the dogs must travel far each day to find enough food,and the larger Grant's gazelles are hunted. Hunting success of African wilddogs in southwestern Kenya. A spottedhyena that was pursued by eight African hunting dogs sought refugeunderneath a parked car in front of the game warden's house in the MikumiNational Park. (1993, May). (1989, March). 131). Mammalia, 39, 231-24 .Schaller, G.B. However, lone dogs that have been successful in a huntoften catch up to their companions and lead them back to the kill(Fanshawe, 199 , p. In the 85 hunts observed by the researchers, the hunting successvaried with the species of ungulate chased. African hunting dogs often become injured during hunts, but unlikethe solitary cheetahs, which face starvation if badly injured and unable tohunt, they benefit from the protection and food that pack society assuresand are rarely permanently disabled (Fanshawe, 1989, p. At this point, the hunt can proceed in a number of ways.Sometimes, especially when the dogs approach a small herd, it may look asif the quarry has been selected by the leader of the pack, even before thebeginning of the hunt. All packmembers participated in each hunt, though some were much more distant thanwere other from individual prey that eventually was killed (Fuller & Kat,1993, p. Prey selectionand success was related to prey abundance and not to pack size, and anyconjecture concerning the evolution of pack size would require furtherresearch. The pups' unruly appearancesattract other dogs, who will sniff and lick them, and bowl them on theirbacks with gentle nosings. 4 (pp. The dog willthen trot off to the quarry, but if the other dogs do not follow, then thedog who wanted to hunt will return to the group. As soon as the quarry begins to run, the dogs begin their pursuit inearnest. 133). The dogs quickly tear it to pieces. Only if hunger is extreme, does an animal attack a largeranimal. If this paper is not what you are looking for, you can search again: Search for: or Click here to request an essay written just for you.