The leopard (Panthera pardus) is a well-known big cat native to Africa, but they can also be found in Asia. They are commonly mistaken for jaguars and cheetahs due to their spots.
Etymology[]
The English name 'leopard' comes from Old French: leupart or Middle French: liepart, that derives from Latin: leopardus and Ancient Greek: λέοπάρδος (leopardos). Leopardos could be a compound of λέων (leōn), meaning lion, and πάρδος (pardos), meaning spotted. The word λέοπάρδος originally referred to a cheetah (Acinonyx jubatus).
'Panther' is another common name, derived from Latin: panther and Ancient Greek: πάνθηρ (pánthēr); The generic name Panthera originates in Latin: panthera, which refers to a hunting net for catching wild beasts that were used by the Romans in combats. The phonetically similar Sanskrit: पाण्डर (pând-ara) means pale yellow, whitish or white. The specific name Latin: pardus refers to a male panther. The word pardus is thought to originate from Ancient Greek: παρδάλωτός (pardalotόs) meaning spotted like a leopard.
Characteristics[]
The leopard's fur is generally soft and thick, notably softer on the belly than on the back. Its skin colour varies between individuals from pale yellowish to dark golden with dark spots grouped in rosettes. Its belly is whitish and its ringed tail is shorter than its body. Its pupils are round. Leopards living in arid regions are pale cream, yellowish to ochraceous and rufous in colour; those living in forests and mountains are much darker and deep golden. Spots fade toward the white underbelly and the insides and lower parts of the legs. Rosettes are circular in East African leopard populations, and tend to be squarish in Southern African and larger in Asian leopard populations. The fur tends to be grayish in colder climates, and dark golden in rain forest habitats. The pattern of the rosettes is unique in each individual. This pattern is thought to be an adaptation to dense vegetation with patchy shadows, where it serves as camouflage.
Its white-tipped tail is about 60–100 cm (23.6–39.4 in) long, white underneath and with spots that form incomplete bands toward the tail's end. The guard hairs protecting the basal hairs are short, 3–4 mm (0.1–0.2 in) in face and head, and increase in length toward the flanks and the belly to about 25–30 mm (1.0–1.2 in). Juveniles have woolly fur, and appear to be dark-coloured due to the densely arranged spots. Its fur tends to grow longer in colder climates. The leopard's rosettes differ from those of the jaguar (Panthera onca), which are darker and with smaller spots inside.
The leopard has a diploid chromosome number of 38. The chromosomes include four acrocentric, five metacentric, seven submetacentric and two telocentric pairs.
Size and weight[]
The leopard is sexually dimorphic with males larger and heavier than females. It is muscular, with relatively short limbs and a broad head. Males stand 60–70 cm (23.6–27.6 in) at the shoulder, while females are 57–64 cm (22.4–25.2 in) tall. The head-and-body length ranges between 90 and 196 cm (2 ft 11.4 in and 6 ft 5.2 in) with a 66 to 102 cm (2 ft 2.0 in to 3 ft 4.2 in) long tail. Sizes vary geographically. Males weigh 37–90 kg (81.6–198.4 lb), and females 28–60 kg (61.7–132.3 lb). Some leopards in North Africa allegedly were as large as Barbary lions (Panthera leo leo). In 1913, an Algerian newspaper reported a leopard killed that allegedly measured about 275 cm (9 ft 0 in) in total length. The maximum weight of a wild leopard in Southern Africa was about 96 kg (212 lb). It measured 262 cm (8 ft 7.1 in). An Indian leopard killed in Himachal Pradesh in 2016 measured 261 cm (8 ft 6.8 in) with an estimated weight of 78.5 kg (173.1 lb); it was perhaps the largest known wild leopard in India.
The largest skull of a leopard was recorded in India in 1920 and measured 28 cm (11.0 in) in basal length, 20 cm (7.9 in) in breadth, and weighed 1,000 g (2 lb 4 oz). The skull of an African leopard measured 285.8 mm (11.25 in) in basal length, and 181.0 mm (7.125 in) in breadth, and weighed 790 g (1 lb 12 oz).
Variant colouration[]
Melanistic leopards are also called black panthers. Melanism in leopards is caused by a recessive allele and inherited as a recessive trait. Interbreeding in melanistic leopards produces a significantly smaller litter size than is produced by normal pairings. The black leopard is common foremost in tropical and subtropical moist forests like the equatorial rainforest of the Malay Peninsula and the tropical rainforest on the slopes of some African mountains such as Mount Kenya. Between January 1996 and March 2009, leopards were photographed at 16 sites in the Malay Peninsula in a sampling effort of more than 1,000 camera trap nights. Of the 445 photographs of melanistic leopards, 410 were taken in study sites south of the Kra Isthmus, where the non-melanistic morph was never photographed. These data indicate the near-fixation of the dark allele in the region. The expected time for the fixation of this recessive allele due to genetic drift alone ranged from about 1,100 years to about 100,000 years. Pseudomelanistic leopards have also been reported.
In India, nine pale and white leopards were reported between 1905 and 1967. Leopards exhibiting erythrism were recorded between 1990 and 2015 in South Africa's Madikwe Game Reserve and in Mpumalanga. The cause of this morph, known as a "strawberry leopard" or "pink panther", is not well understood.
Distribution and habitat[]
The leopard has the largest distribution of all wild cats, occurring widely in Africa, the Caucasus and Asia, although populations are fragmented and declining. It is considered to be extirpated in North Africa. It inhabits foremost savanna and rainforest, and areas where grasslands, woodlands, and riverine forests remain largely undisturbed. In sub-Saharan Africa, it is still numerous and surviving in marginal habitats where other large cats have disappeared. There is considerable potential for human-leopard conflict due to leopards preying on livestock.
Leopard populations on the Arabian Peninsula are small and fragmented. In southeastern Egypt, a leopard killed in 2017 was the first record in this area in 65 years. In western and central Asia, it avoids deserts, areas with long snow cover and proximity to urban centres.
In the Indian subcontinent, the leopard is still relatively abundant, with greater numbers than those of other Panthera species. As of 2020, the leopard population within forested habitats in India's tiger range landscapes was estimated at 12,172 to 13,535 individuals. Surveyed landscapes included elevations below 2,600 m (8,500 ft) in the Shivalik Hills and Gangetic plains, Central India and Eastern Ghats, Western Ghats, the Brahmaputra River basin and hills in Northeast India. Some leopard populations in the country live quite close to human settlements and even in semi-developed areas. Although adaptable to human disturbances, leopards require healthy prey populations and appropriate vegetative cover for hunting for prolonged survival and thus rarely linger in heavily developed areas. Due to the leopard's stealth, people often remain unaware that it lives in nearby areas.
In Nepal's Kanchenjunga Conservation Area, a melanistic leopard was photographed at an elevation of 4,300 m (14,100 ft) by a camera trap in May 2012. In Sri Lanka, leopards were recorded in Yala National Park and in unprotected forest patches, tea estates, grasslands, home gardens, pine and eucalyptus plantations. In Myanmar, leopards were recorded for the first time by camera traps in the hill forests of Myanmar's Karen State. The Northern Tenasserim Forest Complex in southern Myanmar is considered a leopard stronghold. In Thailand, leopards are present in the Western Forest Complex, Kaeng Krachan-Kui Buri, Khlong Saeng-Khao Sok protected area complexes and in Hala Bala Wildlife Sanctuary bordering Malaysia. In Peninsular Malaysia, leopards are present in Belum-Temengor, Taman Negara and Endau-Rompin National Parks. In Laos, leopards were recorded in Nam Et-Phou Louey National Biodiversity Conservation Area and Nam Kan National Protected Area. In Cambodia, leopards inhabit deciduous dipterocarp forest in Phnom Prich Wildlife Sanctuary and Mondulkiri Protected Forest. In southern China, leopards were recorded only in the Qinling Mountains during surveys in 11 nature reserves between 2002 and 2009.
In Java, leopards inhabit dense tropical rainforests and dry deciduous forests at elevations from sea level to 2,540 m (8,330 ft). Outside protected areas, leopards were recorded in mixed agricultural land, secondary forest and production forest between 2008 and 2014.
In the Russian Far East, it inhabits temperate coniferous forests where winter temperatures reach a low of −25 °C (−13 °F).
Behavior and ecology[]
The leopard is a solitary and territorial animal. Adults associate only in the mating season. Females continue to interact with their offspring even after weaning, and have been observed sharing kills with their offspring when they can not obtain any prey. They produce a number of vocalizations, including growls, snarls, meows and purrs. The roaring sequence in leopards consists mainly of grunts, also called "sawing", as it resembles the sound of sawing wood. Cubs call their mother with a urr-urr sound.
The whitish spots on the back of its ears are thought to play a role in communication. It has been hypothesized that the white tips of their tails may function as a 'follow-me' signal in intraspecific communication. However, no significant association were found between a conspicuous colour of tail patches and behavioural variables in carnivores.
Leopards are active mainly from dusk till dawn and rest for most of the day and for some hours at night in thickets, among rocks or over tree branches. Leopards have been observed walking 1–25 km (0.62–15.53 mi) across their range at night; they may even wander up to 75 km (47 mi) if disturbed. In some regions, they are nocturnal. In western African forests, they have been observed to be largely diurnal and hunting during twilight, when their prey animals are active; activity patterns vary between seasons.
Leopards can climb trees very skillfully, often rest on tree branches and descend from trees headfirst. They can run at over 58 km/h (36 mph), leap over 6 m (20 ft) horizontally, and jump up to 3 m (9.8 ft) vertically.
Social spacing[]
In Kruger National Park, most leopards tend to keep 1 km (0.62 mi) apart. Males interact with their partners and cubs at times, and exceptionally this can extend beyond to two generations. Aggressive encounters are rare, typically limited to defending territories from intruders. In a South African reserve, a male was wounded in a male–male territorial battle over a carcass.
Males occupy home ranges that often overlap with a few smaller female home ranges, probably as a strategy to enhance access to females. In the Ivory Coast, the home range of a female was completely enclosed within a male's. Females live with their cubs in home ranges that overlap extensively, probably due to the association between mothers and their offspring. There may be a few other fluctuating home ranges belonging to young individuals. It is not clear if male home ranges overlap as much as those of females do. Individuals try to drive away intruders of the same sex.
A study of leopards in the Namibian farmlands showed that the size of home ranges was not significantly affected by sex, rainfall patterns or season; the higher the prey availability in an area, the greater the leopard population density and the smaller the size of home ranges, but they tend to expand if there is human interference. Sizes of home ranges vary geographically and depending on habitat and availability of prey. In the Serengeti, males have home ranges of 33–38 km2 (13–15 sq mi) and females of 14–16 km2 (5.4–6.2 sq mi); but males in northeastern Namibia of 451 km2 (174 sq mi) and females of 188 km2 (73 sq mi). They are even larger in arid and montane areas. In Nepal's Bardia National Park, male home ranges of 48 km2 (19 sq mi) and female ones of 5–7 km2 (1.9–2.7 sq mi) are smaller than those generally observed in Africa.
Hunting and diet[]
The leopard is a carnivore that prefers medium-sized prey with a body mass ranging from 10–40 kg (22–88 lb). Prey species in this weight range tend to occur in dense habitat and to form small herds. Species that prefer open areas and have well-developed anti-predator strategies are less preferred. More than 100 prey species have been recorded. The most preferred species are ungulates, such as impala (Aepyceros melampus), bushbuck (Tragelaphus scriptus), common duiker (Sylvicapra grimmia) and chital (Axis axis). Primates preyed upon include white-eyelid mangabeys (Cercocebus sp.), guenons (Cercopithecus sp.) and gray langurs (Semnopithecus sp.). Leopards also kill smaller carnivores like black-backed jackal (Lupulella mesomelas), bat-eared fox (Otocyon megalotis), genet (Genetta sp.) and cheetah.
The largest prey killed by a leopard was reportedly a male eland weighing 900 kg (2,000 lb). A study in Wolong National Nature Reserve in southern China demonstrated variation in the leopard's diet over time; over the course of seven years, the vegetative cover receded, and leopards opportunistically shifted from primarily consuming tufted deer (Elaphodus cephalophus) to pursuing bamboo rats (Rhizomys sinense) and other smaller prey.
The leopard depends mainly on its acute senses of hearing and vision for hunting. It primarily hunts at night in most areas. In western African forests and Tsavo National Park, they have also been observed hunting by day. They usually hunt on the ground. In the Serengeti, they have been observed to ambush prey by jumping down on it from trees.
The animal stalks its prey and tries to approach as closely as possible, typically within 5 m (16 ft) of the target, and, finally, pounces on it and kills it by suffocation. It kills small prey with a bite to the back of the neck, but holds larger animals by the throat and strangles them It caches kills up to 2 km (1.2 mi) apart. It is able to take large prey due to its powerful jaw muscles, and is therefore strong enough to drag carcasses heavier than itself up into trees; an individual was seen to haul a young giraffe weighing nearly 125 kg (276 lb) up 5.7 m (18 ft 8 in) into a tree. It eats small prey immediately, but drags larger carcasses over several hundred metres and caches it safely in trees, bushes or even caves. The way it stores the kill depends on local topography and individual preferences, varying from trees in Kruger National Park to bushes in the plain terrain of the Kalahari.
Average daily consumption rates of 3.5 kg (7 lb 11 oz) were estimated for males and of 2.8 kg (6 lb 3 oz) for females. In the southern Kalahari Desert, leopards meet their water requirements by the bodily fluids of prey and succulent plants; they drink water every two to three days and feed infrequently on moisture-rich plants such as gemsbok cucumbers (Acanthosicyos naudinianus), watermelon (Citrullus lanatus) and Kalahari sour grass (Schmidtia kalahariensis).
Enemies and competitors[]
In parts of its global range, the leopard is sympatric with other large predators such as the tiger (Panthera tigris), lion (P. leo), cheetah, spotted hyena (Crocuta crocuta), striped hyena (Hyaena hyaena), brown hyena (Parahyaena brunnea), African wild dog (Lycaon pictus), dhole (Cuon alpinus), wolf (Canis lupus) and up to five bear species. Some of these species steal its kills, kill its cubs and even kill adult leopards. Leopards retreat up a tree in the face of direct aggression, and were observed when killing or preying on smaller competitors such as black-backed jackal, African civet (Civettictis civetta), caracal (Caracal caracal) and African wildcat (Felis lybica). Leopards generally seem to avoid encounters with adult bears, but kill vulnerable bear cubs. In Sri Lanka, a few recorded vicious fights between leopards and sloth bears (Melursus ursinus) apparently result in both animals winding up either dead or grievously injured.
While interspecies killing of full-grown leopards is generally rare, given the opportunity, both tiger and lion readily kill and consume both young and adult leopards. In the Kalahari Desert, leopards frequently lose kills to brown hyenas, 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. Lions occasionally fetch leopard kills from trees.
Resource partitioning occurs where leopards share their range with tigers. Leopards tend to take smaller prey, usually less than 75 kg (165 lb), where tigers are present. In areas where leopard and tiger are sympatric, coexistence is reportedly not the general rule, with leopards being few where tigers are numerous. Tigers appear to inhabit the deep parts of a forest while leopards are pushed closer to the fringes. In tropical forests, leopards do not always avoid the larger cats by hunting at different times. With relatively abundant prey and differences in the size of prey selected, tigers and leopards seem to successfully coexist without competitive exclusion or interspecies dominance hierarchies that may be more common to the leopard's co-existence with the lion in savanna habitats.
Nile crocodiles (Crocodylus niloticus) prey on leopards occasionally. One large adult leopard was grabbed and consumed by a large crocodile while attempting to hunt along a bank in Kruger National Park. Mugger crocodiles (Crocodylus palustris) reportedly killed an adult leopard in Rajasthan. An adult leopard was recovered from the stomach of a 5.5 m (18 ft 1 in) Burmese python (Python bivittatus). In Serengeti National Park, troops of 30–40 olive baboons (Papio anubis) were observed while mobbing and attacking a female leopard and her cubs.
Reproduction and life cycle[]
In some areas, leopards mate all year round. In Manchuria and Siberia, they mate during January and February. The female's estrous cycle lasts about 46 days, and she usually is in heat for 6–7 days. The generation length of the leopard is 9.3 years. Gestation lasts for 90 to 105 days. Cubs are usually born in a litter of 2–4 cubs. Mortality of cubs is estimated at 41–50% during the first year.
Females give birth in a cave, crevice among boulders, hollow tree or thicket. Cubs are born with closed eyes, which open four to nine days after birth. The fur of the young tends to be longer and thicker than that of adults. Their pelage is also more gray in colour with less defined spots. Around three months of age, the young begin to follow the mother on hunts. At one year of age, cubs can probably fend for themselves, but remain with the mother for 18–24 months.
The average typical life span of a leopard is 12–17 years. The oldest leopard was a captive female that died at the age of 24 years, 2 months and 13 days.