Northern Chinese leopard kept in the Jardin des Plantes, Paris
Ecology and behavior
Leopard resting on a tree
Leopards are elusive, solitary and largely nocturnal.[32][33] They have primarily been studied in open savanna habitats, which may have biased common descriptions. Activity level varies depending on the habitat and the type of prey that they hunt. Radio-tracking and scat analysis in West Africa showed that rainforest leopards are more likely to be diurnal and crepuscular. Forest leopards are also more specialized in prey selection and exhibit seasonal differences in activity patterns.[34]
Leopards are known for their ability in climbing, and have been observed resting on tree branches during the day, dragging their kills up trees and hanging them there, and descending from trees headfirst.[35] They are powerful swimmers, although are not as disposed to swimming as some other big cats, such as the tiger. They are very agile, and can run at over 58 kilometres per hour (36 mph), leap over 6 metres (20 ft) horizontally, and jump up to 3 metres (9.8 ft) vertically.[36] They produce a number of vocalizations, including grunts, roars, growls, meows, and "sawing" sounds.[37]
[edit]Social structure and home range
Female leopard in the
Sabi Sands area of
South Africa. Note the white spot on its tail, used for communicating with cubs while hunting or in long grass.
[2]
Home ranges of male leopards vary between 30 km2 (12 sq mi) and 78 km2 (30 sq mi), and of females between 15 to 16 km2 (5.8 to 6.2 sq mi).[4]Virtually all sources suggest that males do have larger home ranges. There seems to be little or no overlap in territory among males, although overlap exists between the sexes; one radio-collar analysis in the Ivory Coastfound a female home range completely enclosed within a male's.[38]
Research in a conservation area in Kenya showed similar territory sizes and sex differential: 32.8 km2(12.7 sq mi) average ranges for males, and 14 km2 (5.4 sq mi) for females.[39]
In Nepal, somewhat larger male ranges have been found at about 48 km2 (19 sq mi), while female ranges at 17 km2 (6.6 sq mi); female home ranges decreased to 5 to 7 km2 (1.9 to 2.7 sq mi) when young cubs were present, while the sexual difference in range size seemed to be in positive proportion to overall increase.[40]
Studies of leopard home range size have tended to focus on protected areas, which may have led to skewed data; as of the mid-1980s, only 13% of the leopard range actually fell within a protected area. However, significant variations in the size of home ranges have been suggested across the leopard's range. Research in Namibia that focused on spatial ecology in farmlands outside of protected areas revealed ranges that were consistently above 100 km2 (39 sq mi) with some more than 300 km2 (120 sq mi). Admitting that their data were at odds with others, the researchers found little or no sexual variation in the size of territories.[41]
Aggressive encounters have been observed. Two of five males studied over a period of a year at a game reserve in South Africa died, both violently. One was initially wounded in a male–male territorial battle over a carcass; taken in by researchers, it was released after a successful convalescence only to be killed by a different male a few months later. A second was killed by another predator, possibly a spotted hyena. A third of the five was badly wounded in intraspecific fighting, but recovered.[32]
[edit]Hunting and diet
Leopard with kill in tree in South Africa
Leopards are versatile, opportunistic hunters, and have a very broad diet. They feed on a greater diversity of prey than other members of the Panthera species, and will eat anything from dung beetles to 900 kg (2,000 lb) male giant elands, though prey usually weighs considerably less than 200 kg (440 lb) .[4] Their diet consists mostly of ungulates, followed by primates, primarily monkeys of various species. However, they will also opportunistically eat rodents, reptiles, amphibians, insects, birds (especially ground-based types like theVulturine Guineafowl), fish and sometimes smaller predators (such as foxes, jackals, martens and smaller felid species). In at least one instance, a leopard has predated a sub-adult Nile crocodile that was crossing over land.[42] Leopards are the only natural predators of adult chimpanzees and gorillas, although the cat may sometimes choose to avoid these as they are potentially hazardous prey, especially large male silverback gorillas.[43][44] They stalk their prey silently, pounce on it at the last minute, and strangle its throat with a quick bite. In Africa, mid-sized antelopes provide a majority of their prey, especially impala and Thomson's gazelles.[45]
In the open savanna of Tsavo National Park, they kill most of their prey while hunting between sunset and sunrise.[46] In Kruger National Park, males and females with cubs are more active at night. At least 92 prey species have been documented in their diet. They focus their hunting activity on locally abundant medium-sized ungulate species in the 20 to 80 kg (44 to 180 lb) range, while opportunistically taking other prey. Analysis of leopard scats found that 67% contained ungulate remains, of which 60% were impala, the most abundant antelope, with adult weights of 40 to 60 kg (88 to 130 lb). Small mammal remains were found most often in scats of sub-adult leopards, especially females. Average daily consumption rates was estimated at 3.5 kg (7.7 lb) for adult males and 2.8 kg (6.2 lb) for females.[47]
In Asia, the leopard primarily preys on deer such as chitals and muntjacs, as well as various Asian antelopes and ibex. Prey preference estimates insouthern India showed that the most favored prey of the leopard were chitals.[48] A study at the Wolong Reserve in China revealed how adaptable their hunting behaviour is. Over the course of seven years, the vegetative cover receded, and the animals opportunistically shifted from primarily consuming tufted deer to pursuing bamboo rats and other smaller prey.[49]
They select their prey focusing on small herds, dense habitat, and low risk of injury, preferring prey weights of 10 to 40 kg (22 to 88 lb) such as impala, chital, bushbuck and common duiker with an average body weight of 25 kg (55 lb).[50]
In search of safety, leopards often stash their young or recent kills high up in a tree, which can be a great feat of strength considering that they may be carrying prey heavier than themselves in their the mouth while they climb vertically.[45] One leopard was seen to haul a young giraffe, estimated to weigh up to 125 kg (280 lb), more than twice the weight of the cat, up 5.7 m (19 ft) into a tree.[46]
[edit]Interspecific predatory relationships
Video of a leopard in the wild
Leopards must compete for food and shelter with other large predators such as lions, tigers, spotted hyenas, striped hyena, up to 5 species of bear and both African and Asiatic wild dogs. These animals may steal the leopard's kill, devour its young or even kill adult leopards, although lions are most likely to kill and not eat young leopards if they are discovered. Conflictions over carcasses often end without bloodshed, because the leopard will often begrudingly cede their kills if they encounter a larger-bodied or group-living predator that can potentially kill them. In some areas of Africa, troops of largebaboon species (potential leopard prey themselves) will kill and sometimes eat leopard young if they discover them.[51] Occasionally, Nile crocodilesmay predate on leopards of any age.[52] Leopards co-exist alongside these other predators by hunting for different types of prey and by avoiding areas frequented by them.[4] Lions are occasionally successful in climbing trees and fetching leopard kills.[45] In the Kalahari desert, leopards frequently lose kills to the brown hyena, if the leopard is unable to move the kill into a tree. Single brown hyenas have been observed charging at and displacing male leopards from kills.[53][54]
Resource partitioning occurs where leopards share their range with lions or tigers. Leopards tend to take smaller prey, usually less than 75 kg (170 lb), where the larger cats are present.[4] In the Chitwan National Park in Nepal, leopards killed prey ranging from less than 25 kg (55 lb) to 100 kg (220 lb) in weight with most kills in the 25–50 kg (55–110 lb) range; tigers killed more prey in the 50–100 kg (110–220 lb) range.[55] In the tropical forests of India’s Nagarhole National Park, tigers selected prey weighing more than 176 kg (390 lb), whereas leopards selected prey in the 30–175 kg (66–390 lb) range. The average weights of leopard prey was 37.6 kg (83 lb), and of tiger prey was 91.5 kg (202 lb) with a bias towards adult males of chital, sambar and wild pig, and young gaur.[56] In tropical forest they do not always avoid the larger cats by hunting at different times. With relatively abundant prey, tigers and leopards seem to successfully coexist without competitive exclusion or inter-species dominance hierarchies that may be more common to the leopard's co-existence with the lion in savanna habitats.[57] In areas with high tiger populations, such as in the central parts of India’s Kanha National Park, leopards are not permanent residents, but transients. They were common near villages at the periphery of the park and outside the park.[55]
[edit]Reproduction and life cycle
Depending on the region, leopards may mate all year round. In Manchuria and Siberia, they mate during January and February. The estrous cycle lasts about 46 days and the female usually is in heat for 6–7 days.[58] Gestation lasts for 90 to 105 days.[59] Cubs are usually born in a litter of 2–4 cubs.[60] But mortality of cubs is estimated at 41–50% during the first year.[47]
Females give birth in a cave, crevice among boulders, hollow tree, or thicket to make a den. Cubs are born with closed eyes, which open four to nine days after birth.[61] The fur of the young tends to be longer and thicker than that of adults. Their pelage is also more gray in color with less defined spots. Around three months of age, the young begin to follow the mother on hunts. At one year of age, leopard young can probably fend for themselves, but remain with the mother for 18–24 months.[35]
Leopards have been reported to reach 21 years of age in captivity.[62]
[edit]Hybrids
Main article: Panthera hybrid
Crossbreeding between leopards and other members of the genus Panthera has been documented, resulting in hybrids. A cross between a lioness and a male leopard is known as a leopon (or a lipard if the sex of the parents is reversed). Leopons have been bred in captivity; a well-documented case occurred at the Koshien Hanshin Park in Nishinomiya, Japan in the late 1950s.[63] Although lions and leopards may come in to contact in sub-Saharan Africa, they are not widely believed to interbreed naturally. However, there have been anecdotal reports of small lions with exceptionally pronounced spotting, known as "marozis" and various other names, in several African countries, for which there has been cryptozoological speculation that they may be naturally occurring lion-leopard hybrids.[64]
Crossbreeding between jaguars and leopards in captivity has also been documented.[65][66] A cross between a female leopard and a male jaguar is referred to as a jagupard, the reverse is known a leguar; however, a crosses between either have also been called lepjags. Such crosses can only occur in captivity because leopards do not exist in the wild on the American continents where jaguars live.[citation needed] There have also been a few claims of crosses between tigers and leopards.[67]
Main article: Pumapard
A pumapard is a hybrid animal resulting from a mating between a leopard and a puma (a member of the Puma genus, not the Panthera genus). Three sets of these hybrids were bred in the late 1890s and early 1900s by Carl Hagenbeck at his animal park in Hamburg, Germany. While most of these animals did not reach adulthood, one of these was purchased in 1898 by the Berlin Zoo. A similar hybrid in the Berlin Zoo purchased from Hagenbeck was a cross between a male leopard and a female puma. A specimen in the Hamburg Zoo (in the photo at right) was the reverse pairing, fathered by a puma bred to an Indian leopardess.[68]
Whether born to a female puma mated to a male leopard, or to a male puma mated to a female leopard, pumapards inherit a form of dwarfism. Those reported grew to only half the size of the parents. They have a puma-like long body (proportional to the limbs, but nevertheless shorter than either parent), but short legs. The coat is variously described as sandy, tawny or greyish with brown, chestnut or faded rosettes.[68]
[edit]Leopards and humans
Leopards have been known to humans throughout history, and have featured in the art, mythology, and folklore of many countries where they have historically occurred, such as ancient Greece,Persia, and Rome, as well as some where they have not existed for several millennia, such as England. The modern use of the leopard as an emblem for sport or a coat of arms is much more restricted to Africa, though numerous products worldwide have used the name.
Leopard domestication has also been recorded—several leopards were kept in a menagerie established by King John at the Tower of London in the 13th century; around 1235, three of these animals were given to Henry III by Holy Roman Emperor Frederick II.[69]
[edit]Heraldry
Main article: Leopard (heraldry)
The lion passant guardant or leopard is a frequently used charge in heraldry, most commonly appearing in groups of three.[70] The heraldric leopard lacks spots and sports a mane, making it visually almost identical to the heraldric lion, and the two are often used interchangeably. These traditional lions passant guardant appear in the coat of arms of England and many of its former colonies; more modern naturalistic (leopard-like) depictions appear on the coat of arms of several African nations including Benin, Malawi, Somalia, the Democratic Republic of the Congo andGabon, which uses a black panther.[71]
[edit]Tourism
Park reserves in several countries operate wildlife touring programs that allow visitors to observe leopards in their natural habitat. The Sabi Sands Private Game Reserve in South Africa is one such establishment that offers safari ventures. Sri Lanka offers two leopard habitats, Yala National Park and Wilpattu National Park, where wildlife tours are available. In India, leopards can be seen in the Madhya Pradesh and Uttarakhand national parks.
While luxury establishments may boast the fact that wild animals can be seen at close range on a daily basis, the leopard's camouflage and propensity to hide and stalk prey typically make leopard sightings rare.[72] For example, in Sri Lanka's Yala National Park, leopards have been ranked by visitors to be among the least visible of all animals in the park despite their high concentration in the reserve.[73]
[edit]Man-eating
Most leopards avoid people, but humans may occasionally be targeted as prey. Most healthy leopards prefer wild prey to humans, but injured, sickly, or struggling cats or those with a shortage of regular prey may resort to hunting humans and become habituated to it. Two extreme cases occurred in India: the first leopard, "the Leopard of Rudraprayag", may have killed more than 125 people; the second, the "Panar Leopard", was believed to have killed more than 400, after injury by a poacher made it unable to hunt normal prey.[74][75] Both were killed by hunter Jim Corbett.[76]Man-eating leopards are considered bold and difficult to track by feline standards and may enter human settlements for prey, more so than lions and tigers.[77] Author and big game hunterKenneth Anderson had first-hand experience with many man-eating leopards, and described them as far more threatening than tigers:
Although examples of such animals are comparatively rare, when they do occur they depict the panther [leopard] as an engine of destruction quite equal to his far larger cousin, the tiger. Because of his smaller size he can conceal himself in places impossible to a tiger, his need for water is far less, and in veritable demoniac cunning and daring, coupled with the uncanny sense of self preservation and stealthy disappearance when danger threatens, he has no equal.
—Kenneth Anderson, Nine Man-Eaters and One Rogue, Chapter II "The Spotted Devil of Gummalapur""
-
A mosaic depicting Dionysus on a leopard. 4th century BC. Pella, Greece.
Coat of arms of the German state ofBaden-Württemberg
A female leopard in the Sabi Sands of South Africa near a game vehicle
The Panar Leopard, shot by Jim Corbettin 1910 after killing 400 people
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