Ojon, a 24-year-old Sumatran orangutan, is seen at a zoo amid the coronavirus disease (COVID-19) outbreak in Bandung, West Java Province, Indonesia, May 18, 2020. Picture taken May 18, 2020. REUTERS/Ajeng Dinar Ulfiana

'Penny the Orangutan' artwork in Chiswick with a face mask, following the outbreak of the coronavirus disease (COVID-19), London, Britain, April 27, 2020. REUTERS/Hannah McKay

'Penny the Orangutan' artwork in Chiswick with a face mask, following the outbreak of the coronavirus disease (COVID-19), London, Britain, April 27, 2020. REUTERS/Hannah McKay

'Penny the Orangutan' artwork in Chiswick with a face mask, following the outbreak of the coronavirus disease (COVID-19), London, Britain, April 27, 2020. REUTERS/Hannah McKay

'Penny the Orangutan' artwork in Chiswick with a face mask, following the outbreak of the coronavirus disease (COVID-19), London, Britain, April 27, 2020. REUTERS/Hannah McKay

An orangutan is seen inside an enclosure at the Moscow Zoo in the capital Moscow, Russia February 14, 2020. REUTERS/Maxim Shemetov

An orangutan is seen inside an enclosure at the Moscow Zoo in the capital Moscow, Russia February 14, 2020. REUTERS/Maxim Shemetov

A baby orangutan approaches a treat on Valentine's Day at the Moscow Zoo in the capital Moscow, Russia February 14, 2020. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY

Orangutans gather as smoke covers Salat Island which is used by Borneo Orangutan Survival Foundation (BOSF) as a pre-release island for orangutans, in Pulang Pisau regency near Palangka Raya, Central Kalimantan province, Indonesia, September 15, 2019. REUTERS/Willy Kurniawan/File Photo SEARCH "GLOBAL POY" FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2019 PACKAGES. TPX IMAGES OF THE DAY.

An orangutan is pictured at a pre-release island used by Borneo Orangutan Survival Foundation (BOSF) at Sei Gohong village in Palangka Raya, Central Kalimantan province, Indonesia, September 16, 2019. Picture taken September 16, 2019. REUTERS/Willy Kurniawan TPX IMAGES OF THE DAY

An orangutan hangs on a tree at a pre-release island used by Borneo Orangutan Survival Foundation (BOSF) at Sei Gohong village in Palangka Raya, Central Kalimantan province, Indonesia, October 3, 2019. REUTERS/Willy Kurniawan

An orangutan is pictured at an pre-release island for orangutans by Borneo Orangutan Survival Foundation (BOSF) at Sei Gohong village in Palangka Raya, Central Kalimantan province, Indonesia, October 3, 2019. REUTERS/Willy Kurniawan

Orangutans are pictured at a feeding platform of a pre-release island used by Borneo Orangutan Survival Foundation (BOSF) at Sei Gohong village in Palangka Raya, Central Kalimantan province, Indonesia, October 3, 2019. REUTERS/Willy Kurniawan

An orangutan is pictured at a pre-release island used by Borneo Orangutan Survival Foundation (BOSF) at Sei Gohong village in Palangka Raya, Central Kalimantan province, Indonesia, October 3, 2019. REUTERS/Willy Kurniawan

Orangutans are pictured at a pre-release island used by Borneo Orangutan Survival Foundation (BOSF) at Sei Gohong village in Palangka Raya, Central Kalimantan province, Indonesia, October 3, 2019. REUTERS/Willy Kurniawan

An orangutan is pictured at a pre-release island used by Borneo Orangutan Survival Foundation (BOSF) at Sei Gohong village in Palangka Raya, Central Kalimantan province, Indonesia, October 3, 2019. REUTERS/Willy Kurniawan

Orangutans gather as smoke covers Salat Island, which is used by Borneo Orangutan Survival Foundation (BOSF) as a pre-release island for orangutans, in Pulang Pisau regency near Palangka Raya, Central Kalimantan province, Indonesia, September 15, 2019. REUTERS/Willy Kurniawan SEARCH "KURNIAWAN RAYA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY.

An orangutan sits as smoke covers Salat Island which is used by Borneo Orangutan Survival Foundation (BOSF) as a pre-release island for orangutan, in Pulang Pisau regency near Palangka Raya, Central Kalimantan province, Indonesia, September 15, 2019. REUTERS/Willy Kurniawan SEARCH "KURNIAWAN RAYA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Cages are pictured at Orangutan Rehabilitation and Reintroduction site of Borneo Orangutan Survival Foundationn (BOSF) Samboja Lestari in Kutai Kertanegara regency, East Kalimantan province, Indonesia, August 29, 2019. Picture taken August 29, 2019. REUTERS/Willy Kurniawan

Fani, a 15-year-old orangutan hangs on a wood stick at Orangutan Rehabilitation and Reintroduction site of Borneo Orangutan Survival Foundationn (BOSF) Samboja Lestari in Kutai Kertanegara regency, East Kalimantan province, Indonesia, August 29, 2019. Picture taken August 29, 2019. REUTERS/Willy Kurniawan

Three-year-old orangutan of Sumatra, Berani is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Three-year-old orangutan of Sumatra, Berani, and his father Ujilan, are pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Three-year-old orangutan of Sumatra, Berani, is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

An orangutan from Sumatra named Sari is pictured at the Pairi Daiza wildlife park, a zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Three-year-old orangutan from Sumatra, Berani, is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Three-year-old orangutan from Sumatra, Berani, and his father Ujian, are pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Three-year-old orangutan from Sumatra, Berani, is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Three-year-old orangutan from Sumatra, Berani, is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Three-year-old orangutan from Sumatra, Berani, is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman

Berani, a three-year-old orangutan from Sumatra, is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium August 2, 2019. REUTERS/Yves Herman TPX IMAGES OF THE DAY

A young orangutan plays with a yellow ball at Hellabrunn Zoo in Munich, Germany, June 26, 2019. REUTERS/Andreas Gebert

A young orangutan walks through the sun at Hellabrunn Zoo in Munich, Germany, June 26, 2019. REUTERS/Andreas Gebert

A young orangutan plays with a yellow ball at Hellabrunn Zoo in Munich, Germany, June 26, 2019. REUTERS/Andreas Gebert

A young orangutan plays with a yellow ball at Hellabrunn Zoo in Munich, Germany, June 26, 2019. REUTERS/Andreas Gebert

A young orangutan plays with a yellow ball at Hellabrunn Zoo in Munich, Germany, June 26, 2019. REUTERS/Andreas Gebert

Veteran orangutan Nenette eats a cake as she celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier TPX IMAGES OF THE DAY

Veteran orangutan Nenette eats a cake as she celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette eats a cake as she celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette eats a cake as she celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette eats a cake as she celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette eats a cake as she celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Veteran orangutan Nenette eats a cake as she celebrates her 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 16, 2019. REUTERS/Benoit Tessier

Orangutan Theodora and her daughter Java are seen at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Orangutan Theodora and her daughter Java are seen at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Orangutan Theodora and her daughter Java are seen at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Head caretaker Christelle Hano displays paintings made by Orangutan Nenette ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Head caretaker Christelle Hano displays paintings made by Orangutan Nenette ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Head caretaker Christelle Hano displays paintings made by Orangutan Nenette ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Head caretaker Christelle Hano displays paintings made by Orangutan Nenette ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Orangutan Nenette paints with her finger ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Orangutan Nenette holds her colour palette and a blank canvas to show her artistic talents ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Orangutan Nenette holds her colour palette and a blank canvas to show her artistic talents ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

Orangutan Nenette holds her colour palette and a blank canvas to show her artistic talents ahead of her upcoming 50th birthday at the zoo of the Jardin des Plantes in Paris, France, June 13, 2019. REUTERS/Philippe Wojazer

A newborn orangutan is pictured at the Pairi Daiza wildlife park, a zoo and botanical garden in Brugelette, Belgium May 29, 2019. REUTERS/Piroschka van de Wouw TPX IMAGES OF THE DAY

A newborn orangutan is pictured at the Pairi Daiza wildlife park, a zoo and botanical garden in Brugelette, Belgium May 29, 2019. REUTERS/Piroschka van de Wouw

A newborn orangutan is pictured at the Pairi Daiza wildlife park, a zoo and botanical garden in Brugelette, Belgium May 29, 2019. REUTERS/Piroschka van de Wouw