




Join us for an unforgettable orangutan-packed adventure with Lou Grossfeldt
trekking through Australia's Sapphire Coast
Jeni was badly injured during her time in captivity
Monyo was only 6 months old when he lost his mother
Show You Care – Adopt Today!
Our Vision
Our vision is a world where orangutans are free from the threat of extinction and can live in the wild, unharmed by humans.
back to their home.
our two sanctuaries.

Adopt an orphaned orangutan
Orangutans are on the brink of extinction. Help provide the care and rehabilitation
they need to return to the wild.
The Problem
There are numerous threats to the viability of the remaining wild orangutan population in Indonesia and Malaysia. The primary threat is the loss of habitat with up to 80% of suitable forest in Indonesia and Malaysia having been lost in the past 20 years. Other threats, which often go hand-in-hand with the destruction of the rainforest, are the illegal pet trade and poaching.
Latest News
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THE RETURN OF MENTOS
Our Post-Release Monitoring (PRM) team recently spotted a familiar face in the Bukit Batikap Protection Forest. After being untracked for several years since her release in 2015, the female orangutan Mentos was finally identified again. Even... View Article
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A BABY HOUSE FOR SUN BEARS
In addition to 116 orangutans, our Samboja Lestari Centre currently accommodates 76 sun bears. Many of them are orphaned cubs who need nursery care and go to Forest School, similar to our orangutans. “Sun bear cubs... View Article
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SPOTLIGHT ON: PATRICK ROUXEL
Patrick Rouxel serves as a consultant for the BOS Foundation’s Sun Bear Program. His unwavering passion and commitment to improving the facilities of the sun bears at Samboja Lestari are essential to their well-being. What inspired... View Article
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PRESERVING HERITAGE
BOS supports not only orangutans and sun bears but also the indigenous communities living in and around the forests of Kalimantan. We proudly uphold their traditions, such as the Hudoq Festival of the Dayak people, passed... View Article
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OPEN WIDE, PLEASE
Orangutans go to the dentist, too. Our veterinarians handle everything from serious adult procedures to playful check-ups for young ones. Recently, Herkules wasn’t feeling well. He was suffering from cavities and a fractured root tooth, which... View Article
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MEET BABY JENNY
We have recently welcomed a new infant orangutan at the Samboja Lestari Rehabilitation Centre. Little Jenny’s rescue story began when a villager found her alone on an oil palm plantation. Believing she was a macaque, he... View Article
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MERYL’S NEW LIFE IN FREEDOM
At the end of last year, sweet Meryl embarked on her new life in Bukit Baka Bukit Raya National Park. Despite experiencing stress during the journey, Meryl quickly adapted to her new environment. Her journey symbolises... View Article
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A WILD LESSON
Reuniting with rehabilitated orangutans always brings unique stories for our Post-Release Monitoring (PRM) teams at release sites. Here is one from the Kehje Sewen Forest. It was a bright morning when the PRM team members went... View Article
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ORANGUTAN PARTY 2
Do you remember the story of Hamzah crashing Lesan and Sayang’s party? It’s been two years since orangutan Sayang and her baby, along with Lesan and her offspring, last celebrated at Camp Lesik. Recently, they returned... View Article
Subscribe to Forest Chatter Newsletter
You’ll receive updates from our orangutans, stories from our sanctuaries and learn more about our
work to save these beautiful creatures.
Our Community
This #TravelTuesday, our Orangutan Enrichment Volunteer Coordinator, Becky, speaks with #volunteer Chloe about her experiences spotting orangutans on one of our sanctuary islands.
#JoinUs in #borneo for the upcoming season! Tour data are now available, starting in October 2025!
bit.ly/Orangutan-Volunteer
#SaveOrangutans #dontmiss #booknow #corporatevolunteering ... See MoreSee Less
2 days ago
- Likes: 59
- Shares: 2
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This is your #LastChance to give to our #babyhouse appeal, raising the essential funds to build a nursery for our #Orphaned #sunbear #Cubs like Mia.
Unfortunately, we are still far from our goal, but we urgently need to start building the Baby House #ASAP so Mia and the other cubs can sleep safely and comfortably close to their surrogate parent at night.💞
We can't do it without you, so pl#DonateNowteNow here: bit.ly/Baby-Ho#thankyounkYou so much for your support!🙏
You can also #TaxDeductibletible donations by PayPal (bit.ly/BOSA-PayPal) or Bank Deposit (Westpac Bank, BSB: 033 112, Account name: Borneo Orangutan Survival (BOS) Australia Incorporated, Account number: 2443#weneedyourhelpr#donatetodayt#GiveNowv#love##StrongerTogethere#URGENTr#mondaymotivationation
Music #Uppbeatpbeat (free for Creators!):
uppbeat.io/t/brock-hewitt-stories-in-sound/living-waters
License code: NLRMATOIZPAK4WSC ... See MoreSee Less
3 days ago
Please #HelpUs comfort #baby Mia!
The newly rescued #sunbear #cub urgently needs a #babyhouse so she and her friends can sleep next to her surrogate parent at night—and you can #helpus build it.
However, there are only a few days left, and we are still far from our goal of raising the much-needed $50,000.
#GiveNow for a Baby House for little Mia here:
bit.ly/Baby-House (or link in bio)
#weneedyourhelp #donatetoday #DonateNow #love #StrongerTogether #Conservation #URGENT ... See MoreSee Less
4 days ago
Please #HelpUs comfort #baby Mia!
The newly rescued #sunbear #cub urgently needs a #babyhouse so she and her friends can sleep next to her surrogate parent at night—and you can #helpus build it.
However, there are only a few days left, and we are still far from our goal of raising the much-needed $50,000.
#GiveNow for a Baby House for little Mia here: bit.ly/Baby-House
#weneedyourhelp #donatetoday #DonateNow #love #StrongerTogether #Conservation #URGENT ... See MoreSee Less
4 days ago
#thumbsup for a great #weekend!
#orangutan Lesley was rescued in 2012 and is now living together with her friend Kopral on a #sanctuaryisland at Samboja Lestari.
orangutans.com.au
#SaveOrangutans #weekendvibes #love #nature ... See MoreSee Less
5 days ago
I love Lesley so much! 🧡
🥰😍🥰😍
#thumbsup for a great #weekend!
#orangutan Lesley was rescued in 2012 and is now living together with her friend Kopral on a #sanctuaryisland at Samboja Lestari.
orangutans.com.au
#SaveOrangutans #weekendvibes #love #nature ... See MoreSee Less
5 days ago
#DontMiss our latest mum & #baby story here:
orangutans.com.au/the-return-of-mentos (or link in bio)
After being untracked for several years since her release in 2015, our Post Release Monitoring team finally identified female #orangutan Mentos again.
Even more #exciting, she was not alone—Mentos carried a little infant!🙌
#saveorangutans #conservation ... See MoreSee Less
6 days ago
Beauitful please save Them for our.next genration to ser them in the wild not just zoos
Omg be careful litte one ❤️
Peep Peep Peep
well done to her x
So cute
🥰😍🥰😍
Please remember that these amazing living creatures are being turned into endangered species by despicable multinationals like Ferrero which makes Nutella or those making oreo cookies or Cadbury products, to name just a few, which keep on destroying their natural forests in Indonesia and Borneo to plant Palm oíl trees just because Palm oíl IS cheap!!!! The international community must inform consumers about It,fine those multinationals and ban this appalling business and those Who buy those products containing Palm oíl MUST be aware of its terrible consequences... Please,lets read the labels and lets not buy those products containing Palm oíl for the sake of these innocent and unique living creatures 🦧🦧🦧
#DontMiss this week's #WildWednesday mum & baby story here: orangutans.com.au/the-return-of-mentos
After being untracked for several years since her release in 2015, our Post Release Monitoring team finally identified female #orangutan Mentos again.
Even more #exciting, she was not alone—Mentos carried a little infant!
#saveorangutans #conservation ... See MoreSee Less
1 week ago
Bless them both 💕
Hanging around with Mama!
Looks like she's being a great mom! Congratulations to everyone!
😍🥰😍🥰😍