Snakes in Costa Rica

Curious about the snakes you might see in Costa Rica? This detailed guide will help you identify which Costa Rica snakes are venomous and which ones are not, ensuring you can enjoy the country’s rich biodiversity safely and with peace of mind.

What to Know About Snakes in Costa Rica

  • Costa Rica hosts a diverse range of both venomous and non-venomous snakes, with some venomous species like the Bushmaster, Terciopelo, and the Central American Coral Snake being particularly noteworthy for their potency and habitat adaptation.
  • Non-venomous snakes, such as the Boa Constrictor, Lyre Snake, and Mexican Parrot Snake, play a vital role in Costa Rica’s ecosystem and offer equally fascinating attributes, albeit without posing a threat to humans.
  • Educational facilities like La Paz Waterfall Gardens and the Jaguar Reserve in Cahuita offer safe environments for observing and learning about snakes, while debunking common myths helps to address unfounded fears and promote coexistence.

Venomous Snakes of Costa Rica

Venomous Snakes of Costa Rica

Costa Rica is home to a stunning array of venomous snakes, each sporting unique characteristics and adaptations that make them truly fascinating. These venomous species are a testament to nature’s ingenuity, showcasing a diverse range of colors, shapes, and venom potency. While venomous snake encounters are rare, understanding these creatures is vital for both residents and tourists alike.

Some of the most venomous snakes in Costa Rica include:

  • Tropical rattlesnake
  • Terciopelo
  • Eyelash Palm Pit Viper
  • Hog-nosed Pit Viper
  • Jumping Pit Viper
  • Bushmaster

Each of these snakes has distinct features and habitats, contributing to the rich biodiversity of the country. Among these, the Bushmaster, Terciopelo, and the Central American Coral Snake are particularly noteworthy.

When I lived in Santa Ana, a suburb full of expatriates outside of San Jose, I encountered a Coral Snake.  Luckily for me it was on my driveway and not inside my house!

Dangerous Snakes in Costa Rica

Here are some snakes that you should keep your eyes peeled for.


The Bushmaster, scientifically known as Lachesis, is a sight to behold. Known as the deadliest snake in Costa Rica, it is also the longest viper worldwide, with some individuals reaching up to 12 feet long. Its large size is complemented by its potent venom, which can be fatal if not treated promptly.

Bushmasters are primarily nocturnal and feed on:

  • small rodents
  • birds
  • amphibians
  • other reptiles

Human encounters with their venomous bites highlight the need for knowledge and caution when dealing with these creatures. They can be found in the southern parts of Central America, including the diverse habitats of Costa Rica.


The Fer-de-Lance,Terciopelo, or Bothrops asper, is another venomous snake of Costa Rica that demands respect. Its broad, flattened head and light to dark brown or black coloration make it easily identifiable. Known as the most dangerous snake in Costa Rica, the Terciopelo is responsible for a significant number of snake bites and hospitalizations. Its venom, potent enough to be fatal, is a reminder of the respect these creatures command.

Commonly found in lowland rainforests, the Terciopelo also thrives in human-modified environments such as banana plantations and agricultural areas. Given its adaptability and common encounters with humans, it’s imperative to understand this species.

Make sure to read more about dangerous animals in Costa Rica and know what to look for before you venture into the jungle.

Central American Coral Snake

Now, focus shifts to the Central American Coral Snake, a species known for its bright colors and high venom potency. This snake’s vibrant bands of color easily distinguish it from other snakes, including coral snakes found in other regions. However, its beauty belies its lethal potential, as it possesses a highly toxic venom that can cause serious harm if not treated promptly.

The Central American Coral Snake:

  • Is often found in dry forests and rainforests, as well as pine and scrub oak sandhill habitats
  • Primarily feeds on other snakes, with lizards also being secondary prey
  • Plays a critical role in maintaining the balance of Costa Rica’s rich biodiversity

Non-Venomous Snakes of Costa Rica

Non-Venomous Snakes

While venomous snakes often steal the spotlight due to their lethal abilities, non-venomous snakes also play an integral role in Costa Rica’s ecosystem. These harmless creatures are as fascinating as their venomous counterparts, showcasing a stunning array of shapes, sizes, and behaviors. Some of the most commonly sighted non-venomous snakes in Costa Rica include:

  • Boa Constrictor
  • Rainbow Boa
  • Parrot Snake
  • Coachwhip
  • Common Road Garter
  • King Snake

Non-venomous snakes, adaptable and resilient, inhabit various habitats across Costa Rica, from rainforests to dry forests and wetlands. We will explore some of these non-venomous species, starting with the impressive Boa Constrictor.

Boa Constrictor

The Boa Constrictor is a sight to behold. This large, non-venomous snake is known for its distinctive patterns and powerful constriction abilities. Average Boa Constrictors in Costa Rica measure around 7 feet in length, with their pale, brownish colors and over 20 dark markings providing a striking contrast.

Boa Constrictors are renowned for their climbing prowess and swimming abilities, often spotted resting in trees or on branches. They thrive in diverse ecosystems, from tropical rainforests to arid semi-dry deserts, demonstrating their adaptability. Their diet consists of a diverse range of prey, such as birds, mammals, and other reptiles, reflecting their role as formidable predators in the ecosystem.

Lyre Snake

The Lyre Snake, sometimes referred to as a bird snake, is another non-venomous species that deserves recognition. Its broad head, distinct from the slim neck, vertical pupils, and a noticeable V-shaped marking on the back of its head make it easily identifiable. Despite its resemblance to venomous snakes like the Terciopelo and the eyelash pit viper, the Lyre Snake poses no threat to humans.

Living in lower rocky canyons and arroyos of hills and mountains, the Lyre Snake is primarily nocturnal and prefers to inhabit dry areas. It often seeks shelter in hidden locations such as rocky crevices, making it a less common encounter for most people. Its diet mainly consists of:

  • lizards
  • small mammals
  • nestling birds
  • occasionally other snakes

Mexican Parrot Snake

Finally, we focus on the Mexican Parrot Snake, a non-venomous species that is partly arboreal. Known for its vibrant green or golden hues, slender physique, and glossy scales, the Mexican Parrot Snake is a stunner in the world of reptiles.

This species, the tropical milk snake, can be found in tropical forests and agricultural areas, often near water sources. It can also adapt to areas close to human settlements, making it a potential visitor in local homes. Its diet primarily consists of small birds and their eggs, lizards, frogs and frog eggs, and insects such as grasshoppers. Observing this beautiful snake in its natural habitat is an experience that encapsulates the wonder of Costa Rica’s biodiversity.

Costa Rica Snake Safety Tips

While exploring the lush landscapes of Costa Rica, safety should always be a priority, especially when it comes to navigating areas populated by snakes. Understanding snake habitats and behaviors can significantly reduce the risk of potential encounters. It’s also crucial to know what to do in case a snakebite does occur.

Whether you’re a seasoned hiker or a casual wanderer, implementing safety measures can go a long way in ensuring a safe and enjoyable experience. Here are some essential safety tips for dealing with snakes in Costa Rica.

Hiking with a Guide

One of the best ways to ensure safety when hiking in snake-populated areas is to go with a licensed guide. Knowledgeable and experienced, these guides offer:

  • Local expertise in identifying and avoiding snake habitats
  • Assistance in navigating the trails safely
  • Information on snake safety
  • Assistance in the unlikely event of a snakebite

In order to become a licensed guide in Costa Rica, individuals must:

  • Complete a 1,000+ hour tourism course
  • Be a citizen or resident
  • Be at least 18 years old
  • Possess a high school diploma

This ensures that these professionals are well-equipped to guide you through your snake-filled adventures in Costa Rica.

Proper Footwear and Clothing

Now, moving onto clothing and footwear. When hiking in areas with high snake populations, wearing appropriate clothing and footwear is crucial. High boots provide ankle coverage, serving as a protective barrier against potential snake bites, particularly since snakes tend to strike at the lower legs and feet.

Rain boots and snake-proof boots are particularly effective in providing protection against snakebites. These types of footwear create a barrier that makes it more challenging for snakes to bite, as they are unable to penetrate the shoes.

As for clothing, wearing long pants and long-sleeved shirts made of a heavy, yet comfortable material, such as loose-fitting trousers and long-sleeved shirts, can cover exposed skin and provide an additional layer of protection.

Snakebite First Aid and Treatment

In the unlikely event of a snakebite, knowing the correct first aid measures can make all the difference. The immediate steps to take after a snakebite include:

  1. Keeping calm and still to slow the spread of venom
  2. Removing any constricting clothing or jewelry
  3. Ensuring the bite area is at or below heart level
  4. Cleaning the wound with soap and water

Importantly, professional medical help should be sought immediately.

Typical symptoms following a venomous snakebite can include:

  • Localized pain and swelling
  • Bleeding disorders
  • Intense pain near the bite
  • Abdominal pain
  • Vision impairment
  • Diminished reflexes
  • Hypotension
  • Difficulty speaking
  • Seizures

Remember that a snakebite is a medical emergency, and seeking medical care within the first 24 hours is crucial. Costa Rican hospitals are equipped with the necessary medical interventions and effective antivenom for certain venomous species like the Terciopelo and Bushmaster.

Where to Safely Observe Snakes in Costa Rica

Safely Observe Snakes in Costa Rica

For those interested in observing Costa Rica’s diverse snake species up close, there are several animal reserves and sanctuaries that provide a safe environment for such encounters. These places house a variety of snake species, allowing visitors to:

  • Learn about these fantastic creatures
  • Observe their behavior
  • Understand their importance in the ecosystem
  • Appreciate their beauty and unique characteristics

By visiting these reserves and sanctuaries, you can have a safe and educational experience with snakes in Costa Rica.

Let’s explore what a couple of these places – the La Paz Waterfall Gardens and the Jaguar Reserve in Cahuita – offer in terms of snake observation.

La Paz Waterfall Gardens

Located just an hour and a half from San Jose, La Paz Waterfall Gardens is a popular destination for nature lovers. Home to a diverse range of snake species, this park offers a unique opportunity to observe these creatures in a controlled environment.

The gardens offer a variety of services for visitors, including:

  • The largest butterfly observatory in the world
  • Bromeliad gardens
  • A serpentarium
  • A frog pond

Visitors can explore at their own pace, ensuring a safe and enriching experience.

Jaguar Reserve in Cahuita

In the beautiful town of Cahuita, you’ll find the Jaguar Reserve, a sanctuary for ill, injured, and orphaned animals. Here, you can safely observe a wide array of wildlife, including:

  • monkeys
  • sloths
  • various mammals
  • birds
  • snakes

The Jaguar Reserve provides a controlled environment for observing snakes, offering educational programs to inform visitors about snake safety. It offers a unique opportunity to learn about these creatures, contributing to a greater understanding and appreciation of Costa Rica’s rich biodiversity.

Costa Rica Snake Myths Debunked

In every culture, myths and misunderstandings about snakes abound, and Costa Rica is no exception. It’s time to debunk some of these misconceptions and shed light on the true nature of these misunderstood creatures.

From the belief that all snakes are venomous to the mistaken idea that they are naturally aggressive, these misconceptions can lead to unnecessary fear and harmful actions. Let’s explore these myths and uncover the truth.

Venomous vs. Poisonous

One common misconception is that venomous and poisonous are interchangeable terms when it comes to snakes. However, the distinction lies in the method of toxin delivery. Venomous snakes deliver venom into their prey or predators through specialized fangs or stingers, whereas poisonous snakes possess toxins that can be harmful if ingested or touched.

In Costa Rica, venomous snakes, identifiable by their triangular-shaped heads, pupils with slits resembling a cat’s, and robust bodies, make up around 22% of the snake population. Given that not all snakes pose a lethal threat, it becomes important to understand and respect these creatures.

Snake Aggression

Another common myth is that all snakes are aggressive. However, the reality is quite the opposite. In Costa Rica, snakes are not typically aggressive and will only strike if they perceive a threat. Even the most venomous snakes will typically avoid confrontation if possible.

Defensive behaviors include hissing, coiling, and retreating. Some venomous species, like the Fer-de-lance, may also display these behaviors but are ready to defend themselves if the threat persists. Recognizing these behaviors can help prevent potential conflicts with these creatures.

Snakes in Resorts in Costa Rica

Just because you are in a resort doesn’t mean you are safe from snakes. In fact, there are many reviews you can read online about snakes being found in resorts in Costa Rica. When you think about it, many of the top resorts, even Marriott Hotels in Costa Rica, are situated in lush settings. You need to keep your eyes open for snakes in Costa Rica, no matter where you are. While these encounters are very rare, they do occur. We saw a snake at the Springs Spa as we traversed up the steps to our appointment. It wasn’t a poisonous snake, but it still scared us!


Exploring the world of Costa Rica snakes reveals a captivating array of species, each with its unique traits and behaviors. From the deadly Bushmaster to the harmless Boa Constrictor, every snake contributes to the rich biodiversity of this Central American nation. By debunking myths and learning about these remarkable creatures, we can foster a greater appreciation for their role in the ecosystem and coexist harmoniously. Remember, knowledge is the key to respect and safety when it comes to snakes.

Frequently Asked Questions

Are snakes a problem in Costa Rica?

Yes, snakes can be a potential problem in Costa Rica, as it is home to 137 snake species, 22 of which are venomous, leading to almost 500 snake bites per year.

What is the venomous snake in Costa Rica?

The venomous snake in Costa Rica is the Pit Viper, also known as the Terciopelo or Fer de Lance (Bothrops asper). It accounts for almost all snakebite deaths in the country, with death occurring in only 1% of untreated viper snakebites.

Where do most snake bites occur in Costa Rica?

Most snake bites in Costa Rica occur in rural areas, with the terciopelo being involved in six out of ten cases. Other snakes such as the tamagá, rattlesnake, and coral also contribute to reported incidents.

Are there rattlesnakes in Costa Rica?

Yes, the Neotropical Rattlesnake (Crotalus durissus) is the only rattlesnake species found in Costa Rica, preferring dry, savanna-like zones. It is relatively common in the lowlands of the provinces of Guanacaste and the north of Puntarenas.

How many species of snakes are found in Costa Rica?

Costa Rica is home to over 130 species of snakes.

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Tim Schmidt is a 20+ year Entrepreneur and Digital Marketer. A Fort Lauderdale-based "Digital Nomad," he enjoys traveling as much as possible with family and friends. AllWorld is his escape to document all of his adventures, including being a hardcore "foodie." He has property in Costa Rica and visits several times each year and is happy to offer his expert advice for planning your trip.

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