Coconut Crab Pet Care Made Easy: Expert Tips for Owners

Thinking about adopting a coconut crab pet but unsure where to start? Coconut crabs are unique and low-maintenance pets that require specific care to thrive in captivity. From creating the perfect habitat to understanding the coconut crab diet and molting process, this guide answers the common questions pet owners ask, like can coconut crabs be pets or can you keep a coconut crab as a pet? Learn how to supply the perfect climate for these amazing climbing crabs while studying their interesting habits, long lifetimes, and indispensable care tips.

What Makes a Coconut Crab Pet Unique?

Coconut crabs (Birgus latro), also called robber crab pets or palm thieves, are remarkable beasts that capture the interest of pet owners due to their striking characteristics and interesting behaviors. These crabs come from islands all across the Indian and Pacific Oceans, from the Seychelles to Christmas Island to various parts of Polynesia. The following are some coconut crab facts that make them truly unique:

Size and Strength

These crabs can grow up to 3 feet across the leg span and weigh a maximum of up to 9 pounds, thus making them the largest arthropods that survive on land. Their great size and strength enable them to climb trees and even break open coconuts with their massive claws.

Exotic Appearance

Their bright coloration, including reddish-brown to blue hues, and massive claws, give these crabs a very striking and almost prehistoric appearance that appeals to many pet owners.

Longevity

Coconut crabs can live for decades, with some reaching 40–60 years in the wild. Coconut crabs as pets offer long-term companionship, making them a unique commitment for dedicated owners.

Fascinating Behavior

Coconut crabs are natural climbers and explorers, so they enjoy climbing tree branches and going into the substrate as they dig down.

Low Maintenance

Unlike many crab species, such as fiddler crabs, hermit crabs, or red claw crabs, coconut crabs do not require daily feeding or constant attention. With proper habitat and diet, pet coconut crabs thrive with minimal maintenance.

Can You Have a Coconut Crab as a Pet?

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Yes, you can have a coconut crab as a pet. But it comes with challenges. Because these creatures require a carefully maintained habitat with deep sand for burrowing, high humidity (70–90%), and a warm temperature range (75–85°F). 

Also, they need a calcium-rich diet, fresh and saltwater, and minimal handling due to their solitary nature. You may face problems such as making them molt properly, handling their huge size and maintaining their long lifespan.

You can see a look at the coconut crab pet in this video:

How to Keep a Coconut Crab as a Pet?

Coconut crabs are fascinating creatures, but keeping them as pets requires a lot of planning. Besides, they are not for traditional tank setups since they are so large and have special needs. Knowing how to create a perfect habitat for a coconut crab pet will guarantee health, well-being, and a long life. Here’s how to create a suitable living space:

Choose an Appropriate Size of Habitat

Coconut crabs are the largest terrestrial arthropods, growing up to 3 feet (91 cm) in leg span and weighing up to 9 pounds (4 kg). They require a large outdoor enclosure rather than a small tank.

Minimum Size: The habitat should be at least 10 feet x 10 feet (3 x 3 meters) to allow room for burrowing, climbing, and exploring.

Boundary Security: Crabs should be kept in tight walls or fencing that would not allow them to climb out or burrow underneath. The walls should be smooth and deep into the ground to avoid digging out.

Roof or Lid: A roof or a mesh cover is necessary because coconut crabs are good climbers and can easily escape.

Set Up a Natural Substrate

Coconut crabs are burrowing animals, and a proper substrate is critical for their comfort and molting process.

Depth: Provide at least 12–18 inches of substrate.

Materials: A mixture of sand, soil, and coconut fiber is best to mimic their natural coastal habitat. This mixture retains moisture, allows burrowing, and remains firm enough to support tunnels.

Substrate moisture: The substrate should be kept moist, never waterlogged, for the right level of humidity.

Add Climbing Structures and Places to Hide

Coconut crabs are very good climbers and are curious. Add features that mimic their natural habitat:

Image Source From: iStock

Climbing Structures: logs, firm branches, driftwood, and rocks for climbing. These structures will also help in exercising and stimulating them.

Hiding Spots: Add houses such as coconut shells, hollow logs, or caves to which the crab can retire. Hiding places reduces stress and gives a sense of security.

Maintain Optimal Temperature and Humidity

Tropical climates are the usual habitat of coconut crabs, so maintaining the right conditions is key.

Temperature: Keep the habitat at 75–85°F (24–29°C). If you live in a colder climate, consider creating an indoor habitat with heating solutions.

Humidity: It is necessary to maintain 70-90% humidity through misting systems or adding a humidifier. Coconut crab pets rely on high humidity to keep their gills moistened and to aid in molting.

Provide Water for Hydration

The coconut crabs require both freshwater and saltwater.

Water: Provide shallow containers for both types of water, ensuring they are accessible. The water should be deep enough for the legs of the crab to sink in, yet shallow enough for it not to drown.

Saltwater Preparation: It should be prepared using marine salt mix, since they need the ocean water for hydration and to maintain ionic balance.

Create a Feeding Area

Set up a separate feeding area with clean surfaces to ensure waste or water does not contaminate the food.

How to Care for a Coconut Crab Pet?

Caring for a coconut crab entails a combination of proper habitat maintenance, dietary considerations, and regular observation. Here’s a detailed guide about the coconut crab care sheet to ensure your pet thrives:

Secure Housing

Use a spacious tank, at least 50 gallons in capacity, with a tightly sealed lid to prevent escape. Coconut crabs are excellent climbers and need room to explore.

Substrate Depth

A depth of at least 6–8 inches of substrate, a mix of sand, coconut fiber, and soil, will provide them with ample burrowing and molting opportunity.

Temperature and Humidity

The temperature should be around 75–85°F, while the humidity level should range between 70–90%. It can be maintained by using heat lamps and misting systems.

Water Needs

Freshwater and saltwater in shallow, heavy dishes are provided. Water should be clean and accessible to meet hydration needs.

Minimal Handling

Coconut crabs as pets are solitary and can get stressed by frequent handling. Interact minimally to avoid causing them unnecessary anxiety.

What to Feed Your Pet Coconut Crab?

Fruits and vegetables: Mangoes, bananas, papayas, apples, leafy greens, and carrots.

Protein Sources: Boiled eggs, fish, chicken, or shrimp.

Nuts and Seeds: Coconut, walnuts, almonds, and sunflower seeds.

Calcium Supplements: Provide cuttlebone, crushed eggshells, or calcium powder for better development of the shell and its toughness.

Safe Foods Only: Processed foods should not be given, neither dairy nor those with added sugar or salt.

Note: Feed your coconut crab in the evening because they are nocturnal eaters. Remove uneaten food daily to keep the area clean and prevent bacterial growth.

Usual Health Issues in Pet Coconut Crabs

Coconut crab pets are pretty resilient and interesting creatures. Even these resilient pets can become sickly when their care environment is not exactly optimized. Proper attention should be given to coconut crabs diet and habitat for healthy living.

Signs of Illness in Coconut Crabs

Lethargy: Noticeable inactivity or reduced movement can be an indicator of underlying stress or illness.

Discolored Shell: A faded, flaky, or dull shell often signals deficiencies in their diet or an unsuitable habitat.

Incomplete Molting: This natural process is vital for their growth, and failure to molt completely can lead to severe health complications.

Common Health Problems of Coconut Crab Pet and Their Remedies

Molting Problems

Why It Happens: Stress, low humidity, and limited access to proper hiding spots disrupt the molting process.

How to Prevent It: Attempt to simulate the natural environment by providing high humidity of 70–90% and shade in burrow-like areas.

Dehydration

Cause: Lack of required supply of fresh water and salt water.

How to Avoid It: Always make available water dishes for them, which will satisfy their hydration needs; replace them daily.

Weak or Broken Shells

Why It Occurs: A calcium deficiency results in fragile shells, and hence, crabs become prone to injuries.

Prevention: Add calcium-rich food sources to your pet’s diet, such as dried cuttlebone, shrimp shells, or fortified supplements.

When to Seek Veterinary Care

If symptoms of the disease do not fade, or if your coconut crab begins acting differently than usual, an exotic pet veterinarian needs to be seen right away. Minor issues are often resolved early before becoming serious, life-threatening diseases.

Buying a Coconut Crab as a Pet

For those captivated by the unique charm of coconut crabs, purchasing one as a pet requires careful consideration, particularly regarding ethical sourcing.

Image Source From: iStock

Where to Find Coconut Crabs to Buy

Coconut crabs are not widely available in traditional pet stores due to their unique care requirements and legal restrictions in certain regions. If you’re looking for “coconut crab for sale pet” options, here are some reliable sources to explore:

Exotic Pet Dealers: Specialized breeders or exotic pet stores may occasionally sell coconut crabs. Look for sellers who can provide proof of legal and ethical sourcing.

Online Exotic Pet Marketplaces: Some online websites sell exclusively exotic pets, including coconut crabs.

Pet Expos or Exotic Pet Events: These events often feature rare and exotic species, including coconut crabs, where you can interact directly with reputable sellers and learn more about their care.

Important Considerations Before Buying

Legal Restrictions: Check whether owning a coconut crab is legal in your area. In some regions, they are protected under wildlife laws or require special permits.

Commitment: Coconut crabs can live for decades and have specific care needs. Ensure you’re ready for the long-term responsibility.

Reputable Sellers: Try to avoid buying from those sellers who capture crabs from the wild or have poor conditions for keeping them while transporting.

Frequently Asked Questions

Can coconut crabs be kept as pets?

Yes, coconut crabs can be kept as pets, but they require specialized care, proper habitat, and significant commitment to thrive.

Are coconut crabs legal in the US?

Many U.S. states have conservation laws that make it illegal to own a coconut crab, so research local regulations before acquiring one.

Are coconut crabs friendly?

Coconut crabs are not friendly. They are solitary and like little interaction, often displaying defensive behavior if disturbed.

Can coconut crabs live in captivity?

Yes, coconut crabs can survive in captivity provided there is sufficient care in their habitat and their diet and environmental conditions are perfectly met.

Can coconut pet crabs live with other crabs? 

No, coconut crabs are solitary, territorial animals. Housing them with other crabs can result in stress, or even worse, aggression or injury.

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