Leopardus tigrinus

Geographic Range

Leopardus tigrinus is found primarily in South America with a small populations also occurring intermittently in Central America. It can be found as far north as Costa Rica and as far south as the northern tip of Argentina. Its geographic range extends throughout Brazil and the Guianas (i.e., Guyana, Guyane, Suriname) and in parts of Venezuela, Colombia, Equador, Bolivia and Paraguay. There is also speculation that it may be found in some parts of Nicaragua, and Panama.

• Biogeographic Regions
• neotropical neotropical
  • native native

Habitat

Oncillas, also known as little spotted cats and little tiger cats, have been recorded in elevations ranging from sea level to 3200 m. They prefer forested habitats and are found in a wide variety of forests ecosystems, including dense tropical forests at elevations ranging from sea level to 1500 m. From 350 to 1500 m, oncillas can be found in rainforests or humid premontane forests. At 1500 m and above, oncillas can be found in humid montane forests that or cloud forests. Evidence suggests that they are expanding into deciduous forests and subtropical forests, and in Brazil,they have successfully populated savannas and semiarid thorny scrub as well. Oncillas can also be found in plantations and eucalyptus monocultures. Although they are agile tree climbers, they are primarily terriculous.

• Habitat Regions
• tropical tropical
• terrestrial terrestrial

• Terrestrial Biomes
• savanna or grassland savanna or grassland
• forest forest
• rainforest rainforest
• scrub forest scrub forest

• Other Habitat Features
• agricultural agricultural

Physical Description

Oncillas are one of the smallest wild cats in South America. They range in mass from 1.5 kg to 3 kg. Males are slightly larger than females and can weigh up to 3 kg, whereas females generally weigh between 1.5 and 2.0 kg. Male head and body length ranges from 805 to 830 mm, with tail length ranging from 317 to 360 mm. Females range in length from 763 to 780 mm, with tail length ranging from 270 to 305 mm.

Oncillas have short, thick fur that is light brown to grey and is spotted with rosettes that are dark brown with a black outline. The venter is typically paler than the rest of the body, but is still marked with rosettes. The tail is lined with 7 to 13 dark rings and ends with a dark tip. The limbs are covered in randomly placed black spots, and the back of the ears are black with a white spot near the centre of the pinna. The eyes range from light to dark brown. Although melanism has been documented in this species, albinism has not.

Oncillas are often mistaken for ocelots and margays . Although oncillas are smaller than both of these species, they are otherwise very similar in appearance. Oncillas are more slender with larger ears and have a more narrow muzzle then ocelots or margays. The eyes are located more laterally than those of margays', and oncillas have longer tails than do ocelots. In addition, the skulls of oncillas are less robust than those of margays'. The brain case is more narrow, the zygomatic arches are less robust, and the auditory bullae are less inflated. The dorsal profile of the average oncilla skull is also less convex than that of a margay skull. The dental formula for an adult oncilla is 3/3, 1/1, 3/2, 1/1.

• Other Physical Features
• endothermic endothermic
• homoiothermic
• bilateral symmetry bilateral symmetry
• polymorphic polymorphic

• Sexual Dimorphism
• male larger

Reproduction

There is no information available regarding the mating system of Leopardus tigrinus in the wild; however, captive individuals appear to mate with the same partner for life.

Little information exists regarding the mating behavior of oncillas, and that which does exist, was recorded from observations of captive breeding pairs. Although oncillas are primarily solitary, occasionally a breeding pair may be documented. In captivity, oncillas appear to mate for life, however, this has not been confirmed for wild populations. In the wild, males are known to be very aggressive towards females, which may suggest that oncillas are highly solitary.

Female oncillas reach sexual maturity after 2 years of age, whereas males reach sexual maturity after 18 months. Estrous lasts from 3 to 9 days and decreases in duration with age. Mating occurs during early spring and gestation lasts for approximately 75 days. Males have no further involvement after mating. Oncillas typically give birth to 1 kitten per breeding cycle, but can have up to 3 kittens. Neonates range in mass from 92 to 134 g and can open their eyes between 7 and 18 days after birth. Kittens begin eating solid food 5 to 7 weeks after birth, and weaning is usually complete by 3 months of age. Teeth begin to emerge after 21 days which is later than most felines; however, teeth typically emerge all together, within a matter of hours. Most oncillas are full grown by 11 months of age and are completely independent by 4 months of age.

• Key Reproductive Features
• iteroparous iteroparous
• gonochoric/gonochoristic/dioecious (sexes separate)
• sexual sexual
• fertilization fertilization
• viviparous viviparous

Most oncillas are completely weaned by 3 months of age, and young are completely independent 4 months of age. Paternal care is non-existent in this species. No further information exists regarding parental care in oncillas.

• Parental Investment
• altricial altricial
• female parental care female parental care
• pre-hatching/birth
  • provisioning
    • female
  • protecting
    • female
• pre-weaning/fledging
  • provisioning
    • female
  • protecting
    • female
• pre-independence
  • provisioning
    • female
  • protecting
    • female

Lifespan/Longevity

Oncillas generally live for 10 to 14 years in the wild, and although they have been known to live for up to 23 years in captivity, most captive individuals live for 16 to 20 years.

Behavior

Oncillas are primarily nocturnal but are occasionally seen during the day. Although they are primarily terriculous, they are well adapted for climbing. They are sometimes seen in pairs during breeding season, but are considered to be highly solitary. In the wild, males can be extremely aggressive towards females, and it is not uncommon for this species to kill animals larger than itself.

• Key Behaviors
• scansorial
• terricolous
• nocturnal nocturnal
• motile motile
• solitary solitary

Home Range

Oncilla females have a home range size of 0.9 to 2.3 km^2, and males have a home range size of 4.8 to 17 km^2, which is larger than what is expected for cats of this size.

Communication and Perception

Little is known about how oncillas communicate. Young oncilla kittens tend to purr, while grown oncillas have a vocalization described as a "gurgle" which is short and rhythmic.

• Perception Channels
• tactile tactile
• chemical chemical

Food Habits

Little information exists on the feeding habits of wild oncillas; however, their primary prey likely includes birds and small mammals such as rodents . When preying upon birds, oncillas are capable of cleaning their prey free of feathers prior to ingestion. In some regions of their geographic range, they are known to prey upon lizards . Oncillas instantly kill their prey by piercing the back of the skull and severing the the brain stem from the spinal chord.

• Primary Diet
• carnivore carnivore
  • eats terrestrial vertebrates

• Animal Foods
• birds
• mammals
• reptiles

Predation

There is no information available regarding potential predators of oncillas. Oncillas are well adapted climbers and likely evade terriculous predators by hiding in the canopy. In addition, their nocturnal nature and cryptic coloration likely reduces risk of predation as well.

Ecosystem Roles

Although there is no information on the potential ecosystem roles filled by oncillas, as small terrestrial predators, they may help control rodent pest species. There is no information available regarding parasites of this species.

Economic Importance for Humans: Positive

Oncillas are illegally hunted at localized points throughout their geographic range for their pelt, which is similar to that of ocelots and margays . Oncilla pelts were one of the most heavily traded cat furs between 1976 and 1982 and is occasionally traded in various domestic markets. They are also sought for illegal trade on the exotic pet market.

• Positive Impacts
• body parts are source of valuable material

Economic Importance for Humans: Negative

Oncillas are known to occasionally attack and kill poultry throughout its geographic range.

Conservation Status

Oncillas are classified as "vulnerable" on the IUCN's Red List of Threatened Species. Their population was significantly decreased during the 1970's and 80's due to overhunting, and current threats include habitat loss, fragmentation, roads, illegal trade (pets and pelts), and retaliatory killing by poultry farmers. From 1982 to 1990, oncillas were classified as vulnerable by the IUCN. After an 11 year period as a "near threatened" species from 1996 to 2007, oncillas began declining once again in 2008 and were subsequently reclassified as "vulnerable". Although oncillas are protected under Appendix I by CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora), they rarely occur in protected habitat. The phylogenetics of this species are not well established, and it has been suggested that populations occurring in the northern-most part of their geographic range could be a distinct species.

Additional Links

Encyclopedia of Life

Contributors

Chetna Patel (author), University of Alberta, Augustana Campus, Doris Audet (editor), University of Alberta, Augustana Campus, John Berini (editor), Animal Diversity Web Staff.

References

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