Since our first sloth rescue in 1992, we have always aimed to act in the best interest of the sloths of Costa Rica. For over two decades there were no other sloth-only rescue facilities in the world. With so little known about these enigmatic mammals, we basically taught ourselves how to care for them. We expanded when more sloths required rescuing due to development of land for habitation and infrastructure. We have worked closely with the Costa Rican government to ensure we are providing the best possible care within our self-funded means.

Right now the core issue for us is the release of rescued infant sloths. While earlier this year we were working on a protocol for hand-raised sloths, this initiative was recently placed on hold. Our concern: Sloths that are hand-raised due to their mothers’ death or disappearance do not have the life skills to be released into the wild. They do not innately know which trees to forage or what naturally-occurring dangers (such as rivers and hornets’ nests) to avoid. Unlike newly-hatched sea turtles that inherit distinct survival skills, many newborn mammals learn survival skills and self-sufficiency from their mothers. Wild baby sloths spend months with their mothers observing the choices they make. If this cycle is interrupted (most often due to human encroachment in their habitat), there is no other way for the baby to learn what it needs to take care of itself.

Another problematic facet is abandonment due to health deficiencies. When sloth mothers, like other wild animals, observe/sense a deficiency in their offspring many instinctively abandon it—removing it from the gene pool (Darwinism). As rescuers, we try to save the baby from dying, but the conundrum arises when considering it for release: is it safe to reintroduce these “deficient” sloths back into wild sloth populations?

We are currently involved in a massive genetics study with Swansea University (UK) PhD candidate Rebecca Cliffe in collaboration with renowned geneticist Dr. Sofia Consuegra. This study will provide invaluable data on sloth species and the potential of subspecies as well as genetic diversity—their findings are vital for the success of a release program. We are not the only ones dealing with the genetic reintroduction issue. Scientists just recently raised concerns about the alarming ramifications of mixing genetically distinct populations with the release of more than 90 rehabilitated orangutans into the wilds of Borneo.

Sweeping statements (made by others) that almost all rescued infant sloths can be safely released has absolutely no scientific or historical data to support such actions, and releasing them without monitoring would constitute inhumane treatment and potentially wreak havoc within their gene pool.

We recently ordered small, lightweight GPS tracking collars that will provide us essential data about the success rates of rescued sloths released back to the wild. We are looking to collaborate with educational institutions and scientists in Costa Rica or elsewhere who can provide the requisite expertise and background to create and implement a genetically acceptable and humane release program. If you have input or interest, please email

Planting a Terminalia catappa sapling in our orchard for Earth DayOur third annual Earth Day Almond Tree project is in full swing. For $140 USD, we will plant a Terminalia catappa  sapling in our orchard. These trees help prevent erosion, create shade against evaporation, its leaves feed wild and rescued sloths and promote rainforest conservation. This is the most important gift we can give to sloths: protecting their habitats from destruction. We will honor your donation by including an inscription on the donors’ plaque. You may choose to by anonymous or display your name. Or add an inscription to celebrate an anniversary, wedding, retirement, new baby, milestone birthday, graduation—and there is a special in memoriam section for late loved ones’ names. We will send you (or someone else) the optional 4-piece thank-you gift pack. Thank you for your generosity and for supporting sloths and our planet.

Marshmallow’s progress

15 March 2016

Here’s our “sweet” sloth friend, Marshmallow. His weight has now increased to 1,050 grams/about 2 lbs. and he is looking more grown-up every day. If you’ve been following his progress, his coat was much lighter when he was rescued; it’s now developing into the most marvelous blend of colors. Marshmallow is curious and observant, you […]

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Rescue: Spirit

3 March 2016

In very late February 2016, in nearby Puerto Viejo, a schoolgirl found a newborn Three-fingered sloth that had fallen out of a tree and was all alone. The sloth’s mother was never seen and did not return, so the girl’s mother called us for help. This baby Bradypus was given a full examination. Its age […]

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Stacy is doing great in the wild! (English/español)

28 January 2016

You may recall that adult Choloepus Stacy had suffered a severe injury to her arm, including a fractured wrist, and a painful wait until she was rescued and brought to us for treatment. After a few months of rehab, we were thrilled to release Stacy late last month on the Sloth Sanctuary grounds, over 300 […]

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The Rescue of Stacy & Peggy: Conclusion (bilingual edition)

1 January 2016

We are at the conclusion of Stacy’s rescue story. In the three months of rehabilitation, her fractured ulna has healed and she has regained climbing strength. Stacy graduated to the transitional soft-release Almond Tree enclosure where we observed her progress. When we were confident she was ready for release, we did a final health check […]

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The Rescue of Stacy & Peggy: Part 2

1 January 2016

This is a story of joy and sorrow. Choloepus Stacy was brought to us in a tiny wooden box by a firefighter in September 2015. She was wet, dirty, disoriented and a small baby was clinging to her. During Stacy’s examination, it was obvious that she was unable to move her left arm. It was […]

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Symbolically adopt a Sanctuary sloth!

22 December 2015
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Gift Certificates | “Adopt” a sloth

21 December 2015

We invite you to see our Support the Sloths page for gift ideas for sloth-fans, including Insider’s Tour Gift Certificates if your friend or relative is coming to Costa Rica and is planning to visit the Sanctuary. Insider’s Tours are $150 USD for each adult and are valid for two years from the issue date. […]

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Belle: Feeling better every day

30 November 2015

Belle came to us in late April, a rescue from nearby Cahuita National Park. She was found alone in the forest and had a severe case of mange, covered in scabs. After several months of treatments, including vitamins to improve her immune system, this beautiful Bradypus is almost ready to join her friends on the […]

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