HomeTopicsEnvironment and Wildlife5 sloth facts explained: Swimming, squeaking and more

5 sloth facts explained: Swimming, squeaking and more

1. All sloths are excellent swimmers. 

They instinctively know how to swim once they hit the water. This ability makes a lot of sense, because the tropical environments where they live include various bodies of water (rivers, oceans, etc).  Besides not wanting to drown, swimming may be the most efficient way to cross gaps in the forest canopy.

Sloths are excellent swimmers
Photo by Sam Trull.

2. Sloths have a special species of moth that lives only in their hair.

In addition to the moths, their hair is like its own ecosystem: hosting algae, fungus, various parasites, beetles and more!  All very good reasons to not touch a sloth!

Costa Rica Sloths
Photo by Sam Trull.

3. The two kinds of sloths (two-fingered and three-fingered) have been evolving separately for over 40 million years

. They are the most extreme example of convergent evolution in mammals. Convergent evolution is when two species evolve similar traits because of time spent living in similar environments — not from a common ancestor. This makes them about as closely related as we are to capuchin monkeys!

Two- and three-fingered sloths hug in Costa Rica
Photo by Sam Trull.

4. Sloths aren’t lazy, dumb or clumsy.

They are actually super efficient and excellent climbers. Somehow, a rumor got started that sloths are so dumb that they will mistake their arm for a branch!  This is certainly not true. They are meticulous climbers with excellent spatial memory, and while they do often fall, their skeletal structure is built to withstand falls from very tall heights. I have personally seen a sloth fall from over 20 meters without a single scratch!

A wild sloth stretches in Costa Rica
Photo by Sam Trull.

5. Sloth squeaks aren’t actually “cute” to sloths (or human surrogate sloth moms)! 

Baby sloths only vocalize when they are terrified because they are alone and desperate to find their mother. It represents a sudden/accidental separation between mom and baby and is a sign that the baby is extremely stressed.

In the rehab process, we try to make sure that the orphaned sloths have a safe environment to practice their climbing skills and are never forced into a situation that makes them cry. That kind of stress isn’t good for their health and isn’t necessary for them to learn how to be wild. In fact, it likely makes it take longer for them to gain the necessary confidence to explore and become independent. Babies who feel safe and secure grow up to be confident adults.

Costa Rica Sloth Mother and Son
Photo by Sam Trull.

The Sloth Institute is a partner of Toucan Rescue Ranch assisting with the Saving Sloths Together program.

Trending Now

Dengue Up 58% in Costa Rica as Chikungunya Passes 1,000 Cases

Dengue is up 58% in Costa Rica and chikungunya has passed 1,000 cases, mostly in Guanacaste. Where cases are and what to do.

Four in Ten Costa Ricans Hold Back Opinions on Social Media Out of Fear

Four in ten Costa Ricans say they have held back from sharing their opinions on social media for fear of the consequences, according to...

Costa Rica Flights Caught in Only the Third Nationwide US Ground Stop Ever

The FAA stopped all US departures Friday. Here's what it means if you're flying to or from Costa Rica.

Two Arrested in Killing of American Surfer Kurt Van Dyke in Costa Rica

Costa Rican investigators have arrested two people in the February killing of Kurt Van Dyke. He was the 66-year-old American surfer and Puerto Viejo...

How Living in Costa Rica Changed the Way I See the World

When speaking of the 1980s and 90s, I like to refer to it as the previous century. “In the previous century, we didn’t have...

Five Costa Rica Regions on Yellow Alert as Saturday Rain Hits Soaked Ground

If you live in or are traveling through the Central Valley, the Pacific coast or the Northern Zone, you are now under a yellow...

Costa Rica Moves to Fire 36 Finance Ministry Workers Over Mouse-Jiggler App

Costa Rica's Finance Ministry is still working to fire 36 employees accused of installing a mouse-jiggler program to make it look as if they...

Shakira Returns to Costa Rica in 2027 After More Than 15 Years

Shakira plans a January 31, 2027 show at Costa Rica's National Stadium, her first here since 2011.

Costa Rica Can’t Build Its Way Out of Traffic, Public Works Minister Says

Costa Rica's public works minister says more lanes won't end traffic. Here's what MOPT is betting on instead.
Loading…

Latest News from Costa Rica

Costa Rica Coffee Maker Chorreador
Costa Rica Car Rentals
Costa Rica Travel Insurance
Costa Rica Travel