A female leopard is seen at the Ruma National park, Nyanza province, western Kenya, January 30, 2020. Picture taken January 30, 2020. REUTERS/Baz Ratner 

A male Sri Lankan leopard (Panthera pardus kotiya) named Wil Pattu, the father of two cubs that were born in July, is seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopard cubs, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

A male Sri Lankan leopard (Panthera pardus kotiya) named Wil Pattu, the father of two cubs that were born in July, is seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopard cubs, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

Seven year-old female Sri Lankan leopard (Panthera pardus kotiya) Yalla, who gave birth to two cubs in July, is seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopards cubs, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

Two unnamed female Sri Lankan baby leopards (Panthera pardus kotiya) are seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopards, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

Two unnamed female Sri Lankan baby leopards (Panthera pardus kotiya) are seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopards, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

Two unnamed female Sri Lankan baby leopards (Panthera pardus kotiya) are seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopards, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

Two unnamed female Sri Lankan baby leopards (Panthera pardus kotiya) are seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopards, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

Two unnamed female Sri Lankan baby leopards (Panthera pardus kotiya) are seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopards, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS SOCIETY ENVIRONMENT) 

An unnamed female Sri Lankan baby leopard (Panthera pardus kotiya) is seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopard, reported as an endangered animal species by the International Union for Conservation of Nature, was born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS ENVIRONMENT SOCIETY) 

An unnamed female Sri Lankan baby leopard (Panthera pardus kotiya) is seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopard, reported as an endangered animal species by the International Union for Conservation of Nature, was born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS ENVIRONMENT SOCIETY) 

Two unnamed female Sri Lankan baby leopards (Panthera pardus kotiya) are seen in a zoo in Maubeuge August 12, 2014. The Sri Lankan leopards, reported as an endangered animal species by the International Union for Conservation of Nature, were born on July 1, according to the zoo media office. REUTERS/Yves Herman (FRANCE - Tags: ANIMALS TPX IMAGES OF THE DAY SOCIETY) 

Thierry Petit (R), zoo veterinarian, operates on a Sri Lankan leopard at the family-owned Palmyre Zoo in the 18 hectares (44 acres) pine forest of Les Mathes, in the Charente Maritime region, western France, November 20, 2013. The private zoo which opened in 1966 greets up to 800,000 visitors a year and is home to around 1,700 animals of 170 different species. Zoo keepers annually nourish the animals with 250 tons of fodder, 50 tons of meat, 20 tons of fish, 180 tons of fresh fruit and vegetables. Two full-time veterinarians are in charge of the health and well-being of the animals. The Palmyre Zoo participates in 40 European breeding programmes and provides funding for the conservation of endangered species. Picture taken November 20, 2013. REUTERS/Regis Duvignau (FRANCE - Tags: ANIMALS SOCIETY) 

An unnamed Amur leopard baby (Panthere de l'Amour or Pantheras pardus orientalis) is seen in the Tete-d'Or zoo during a press presentation in Lyon, October 9, 2013. The Amur leopard baby, an endangered animal species, was born two months ago, according to the zoo media office. REUTERS/Robert Pratta (FRANCE - Tags: ANIMALS) 

An unnamed Amur leopard baby (Panthere de l'Amour or Pantheras pardus orientalis) is seen in the Tete-d'Or zoo during a press presentation in Lyon, October 9, 2013. The Amur leopard baby, an endangered animal species, was born two months ago, according to the zoo media office. REUTERS/Robert Pratta (FRANCE - Tags: ANIMALS) 

An unnamed Amur leopard baby (Panthere de l'Amour or Pantheras pardus orientalis) is seen in the Tete-d'Or zoo during a press presentation in Lyon, October 9, 2013. The Amur leopard baby, an endangered animal species, was born two months ago, according to the zoo media office. REUTERS/Robert Pratta (FRANCE - Tags: ANIMALS) 

Diana, an Amur leopard (Panthera pardus orientalis), also known as the Far Eastern leopard, Korean leopard and the Manchurian leopard, stretches in her enclosure at the Royev Ruchey zoo in a suburb of Russia's Siberian city of Krasnoyarsk August 7, 2012. Diana, a resident of the zoo, is taking part in a breeding programme with a male leopard, Kostik, brought from another zoo in the city of Abakan in the Khakassia region. According to zoo employees there are 25-35 Amur leopards remaining in the wild, making it one of the most endangered species of large cats in the world. REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS ENVIRONMENT SOCIETY) 

Diana, an Amur leopard (Panthera pardus orientalis), also known as the Far Eastern leopard, Korean leopard and the Manchurian leopard, looks out from her enclosure at the Royev Ruchey zoo in a suburb of Russia's Siberian city of Krasnoyarsk August 7, 2012. Diana, a resident of the zoo, is taking part in a breeding programme with a male leopard, Kostik, brought from another zoo in the city of Abakan in the Khakassia region. According to zoo employees there are 25-35 Amur leopards remaining in the wild, making it one of the most endangered species of large cats in the world. REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS ENVIRONMENT SOCIETY) 

Lira, a female Amur forest wild cat (Felis bengalensis euptilura) also known as the Far Eastern cat, a leopard subspecies, feeds her three 3-month-old cubs in an enclosure at the Royev Ruchey zoo August 7, 2012. REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS ENVIRONMENT SOCIETY) 

Diana, an Amur leopard (Panthera pardus orientalis), also known as the Far Eastern leopard, Korean leopard and the Manchurian leopard, growls in her enclosure at the Royev Ruchey zoo in a suburb of Russia's Siberian city of Krasnoyarsk August 7, 2012. Diana, a resident of the zoo, is taking part in a breeding programme with a male leopard, Kostik, brought from another zoo in the city of Abakan in the Khakassia region. According to zoo employees there are 25-35 Amur leopards remaining in the wild, making it one of the most endangered species of large cats in the world. REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS ENVIRONMENT SOCIETY) 

Kostik, an Amur leopard (Panthera pardus orientalis), also known as the Far Eastern leopard, Korean leopard and the Manchurian leopard, growls in his enclosure at the Royev Ruchey zoo in a suburb of Russia's Siberian city of Krasnoyarsk August 7, 2012. Kostik was brought to the zoo to take part in a breeding programme. According to zoo employees there are 25-35 Amur leopards remaining in the wild, making it one of the most endangered species of large cats in the world. REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS ENVIRONMENT SOCIETY) 

Kostik, an Amur leopard (Panthera pardus orientalis), also known as the Far Eastern leopard, the Korean leopard, and the Manchurian leopard, looks out from his enclosure at the Royev Ruchey zoo in a suburb of Russia's Siberian city of Krasnoyarsk August 7, 2012. Kostik was brought to the zoo to take part in a breeding programme. According to zoo employees, there are 25-35 Amur leopards remaining in the wild, making it one of the most endangered species of large cats in the world. REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS ENVIRONMENT) 

Sariska, mother of two newborn Sri Lankan leopard (Panthera pardus kotiya) cubs, picks up one of her cubs during a medical examination by veterinary surgeons at Bratislava Zoo July 28, 2011. Her two 5-weeks-old cubs, Nanyana and her sister Nimali, were presented to the media for the first time on Thursday. REUTERS/Radovan Stoklasa (SLOVAKIA - Tags: ANIMALS) 

Nimali, a 5-week-old Sri Lankan leopard (Panthera pardus kotiya) cub, receives a medical examination by veterinary surgeons at Bratislava Zoo July 28, 2011. Nimali and her sister Nanyana were presented to the media dor the first time on Thursday. REUTERS/Radovan Stoklasa (SLOVAKIA - Tags: ANIMALS) 

Nayana, a 5-week-old Sri Lankan leopard (Panthera pardus kotiya) cub, receives a medical examination by veterinary surgeons at Bratislava Zoo July 28, 2011. Nanyana and her sister Nimali were presented to the media for the first time on Thursday. REUTERS/Radovan Stoklasa (SLOVAKIA - Tags: ANIMALS) 

Nayana, a 5-week-old Sri Lankan leopard (Panthera pardus kotiya) cub, receives a medical examination by veterinary surgeons at Bratislava Zoo July 28, 2011. Nanyana and her sister Nimali were presented to the media for the first time on Thursday. REUTERS/Radovan Stoklasa (SLOVAKIA - Tags: ANIMALS) 

Nayana, a 5-week-old Sri Lankan leopard (Panthera pardus kotiya) cub, looks out of a pail as she is being weighed during a medical examination by veterinary surgeons at Bratislava Zoo July 28, 2011. Nanyana and her sister Nimali were presented to the media for the first time on Thursday. REUTERS/Radovan Stoklasa (SLOVAKIA - Tags: ANIMALS) 

Nayana, a 5-week-old Sri Lankan leopard (Panthera pardus kotiya) cub, receives a medical examination by veterinary surgeons at Bratislava Zoo July 28, 2011. Nanyana and her sister Nimali were presented to the media for the first time on Thursday. REUTERS/Radovan Stoklasa (SLOVAKIA - Tags: ANIMALS) 

Diana, a six-year-old female rare Amur leopard, walks in her open-air cage at the Royev Ruchey zoo in Krasnoyarsk, July, 11, 2010. The Amur leopard (Panthera pardus orientalis), also known as the Manchurian leopard, is one of the rarest felines in the world with an estimated 30 to 35 individuals remaining in the wild, according the ALTA (the Amur Leopard and Tiger Alliance). REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS) 

Diana, a six-year-old female rare Amur leopard, yawns in her open-air cage at the Royev Ruchey zoo in Krasnoyarsk, July, 11, 2010. The Amur leopard (Panthera pardus orientalis), also known as the Manchurian leopard, is one of the rarest felines in the world with an estimated 30 to 35 individuals remaining in the wild, according the ALTA (the Amur Leopard and Tiger Alliance). REUTERS/Ilya Naymushin (RUSSIA - Tags: ANIMALS) 

Zohra, a one-year-old female African leopard, plays with its zoo keeper at Ghamadan zoo near Amman April 23, 2009. REUTERS/Ali Jarekji (JORDAN ANIMALS ODDLY) 

German TV news-presenter Judidth Rakers poses with a Chinese Leopard cub (Panthera pardus japonensis) during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg April 8, 2009. The two cubs Zhang Jie (female) and Zhongni (male) were born at the Zoo on February 23, 2009. REUTERS/Christian Charisius (GERMANY ANIMALS ENTERTAINMENT) 

German TV news-presenter Judidth Rakers poses with a Chinese Leopard cub (Panthera pardus japonensis) during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg April 8, 2009. The two cubs Zhang Jie (female) and Zhongni (male) where born at the Zoo on February 23, 2009. REUTERS/Christian Charisius (GERMANY ANIMALS ENTERTAINMENT) 

German TV news-presenter Judidth Rakers poses with a Chinese Leopard cub (Panthera pardus japonensis) during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg April 8, 2009. The two cubs Zhang Jie (female) and Zhongni (male) where born at the Zoo on February 23, 2009. REUTERS/Christian Charisius (GERMANY ANIMALS ENTERTAINMENT) 

A Chinese Leopard cub (Panthera pardus japonensis) snarls during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg April 8, 2009. The two cubs Zhang Jie (female) and Zhongni (male) where born at the Zoo on February 23, 2009. REUTERS/Christian Charisius (GERMANY ANIMALS IMAGES OF THE DAY) 

Chinese Leopard cubs (Panthera pardus japonensis) peer out off a basket during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg April 8, 2009. The two cubs Zhang Jie (female) and Zhongni (male) were born at the Zoo on February 23, 2009. REUTERS/Christian Charisius (GERMANY ANIMALS) 

A Chinese Leopard cub (Panthera pardus japonensis) snarls during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg April 8, 2009. The two cubs Zhang Jie (female) and Zhongni (male) where born at the Zoo on February 23, 2009. REUTERS/Christian Charisius (GERMANY ANIMALS IMAGES OF THE DAY) 

A Chinese Leopard cub (Panthera pardus japonensis) snarls during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg April 8, 2009. The two cubs Zhang Jie (female) and Zhongni (male) where born at the Zoo on February 23, 2009. REUTERS/Christian Charisius (GERMANY ANIMALS IMAGES OF THE DAY) 

A female African leopard is seen inside its enclosure at Ghamadan zoo near Amman July 2, 2008.REUTERS/Ali Jarekji (JORDAN) 

A female African leopard carries its one-week-old cub inside its enclosure at Ghamadan zoo near Amman July 2, 2008.REUTERS/Ali Jarekji (JORDAN) 

A Chinese Leopard cub (Panthera pardus japonensis) snarls during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg September 28, 2007. The two female cubs Li Mei and Jiao and their brother Tschingis where born at the Zoo on August 24, 2007. REUTERS/Christian Charisius (GERMANY) 

Chinese Leopard cubs (Panthera pardus japonensis) peer out off a basket during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg September 28, 2007. The two female cubs Li Mei and Jiao and their brother Tschingis where born at the Zoo on August 24, 2007. REUTERS/Christian Charisius (GERMANY) 

Three Chinese Leopard cubs (Panthera pardus japonensis) peer out off a basket during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg September 28, 2007. The two female cubs Li Mei and Jiao and their brother Tschingis where born at the Zoo on August 24, 2007. REUTERS/Christian Charisius (GERMANY) 

A Chinese Leopard cub (Panthera pardus japonensis) peers out off a basket during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg September 28, 2007. The two female cubs Li Mei and Jiao and their brother Tschingis where born at the Zoo on August 24, 2007. REUTERS/Christian Charisius (GERMANY) 

Three Chinese Leopard cubs (Panthera pardus japonensis) peer out off a basket during a name giving ceremony at the 'Tierpark Hagenbeck' zoo in Hamburg September 28, 2007. The two female cubs Li Mei and Jiao and their brother Tschingis where born at the Zoo on August 24, 2007. REUTERS/Christian Charisius (GERMANY) 

A two-month-old female Sri Lanka leopard is seen at Fuengirola's zoo, southern Spain, August 11, 2007. The feline, which is in danger of extinction, is the first leopard born in captivity in Spain. REUTERS/Jon Nazca (SPAIN) 

A two-month-old female Sri Lanka leopard hangs from a tree at Fuengirola's zoo, southern Spain, August 11, 2007. It is the first leopard born in captivity in Spain. REUTERS/Jon Nazca (SPAIN) 

A two-month-old female Sri Lanka leopard is seen at Fuengirola's zoo, southern Spain, August 11, 2007. It is the first leopard born in captivity in Spain. REUTERS/Jon Nazca (SPAIN) 

Six-week-old Asian leopards 'Namlea' and her sister 'Kendari' sit in a basket during a presentation in Berlin. Six-week-old female Asian leopards (pantera pardus) 'Namlea' (front) and her sister 'Kendari' sit in a basket during a presentation at Berlin's Tierpark Friedrichsfelde zoo December 14, 2004. 'Namlea' and her sister 'Kendari' were born on November 3, 2004, the offspring of a black leopard (pantera pardus ssp) and a Java leopard (pantera pardus melas). . REUTERS/Arnd Wiegmann 

Basia, a six-week old Chinese Leopard girl (Panthera pardus japonensis), is pictured during her name giving ceremony at the Hagenbeck Zoo in the northern German city of Hamburg July 8, 2004. 

Basia, a six-week old Chinese Leopard girl (Panthera pardus japonensis), is pictured during her name giving ceremony at the Hagenbeck Zoo in the northern German city of Hamburg July 8, 2004. REUTERS/Christian Charisius CHA 

Basia, a six-week old Chinese Leopard girl (Panthera pardus japonensis), is pictured during her name giving ceremony at the Hagenbeck Zoo in the northern German city of Hamburg July 8, 2004. REUTERS/Christian Charisius CHA