Choosing Your Mexican Red Knee Tarantula
The Mexican Red Knee Tarantula (Brachypelma hamorii), with its striking coloration and relatively docile nature, has become a popular choice for tarantula enthusiasts. Before bringing one home, it’s crucial to understand the specific needs of these captivating creatures. This comprehensive guide provides all the essential information needed to ensure your Mexican Red Knee Tarantula thrives. From selecting a healthy specimen to creating the perfect habitat and understanding its unique behaviors, this guide covers everything you need to know to become a successful tarantula owner. Proper care is not just about survival; it’s about providing a fulfilling life for your eight-legged friend, allowing you to appreciate the wonders of this fascinating species. Choosing your tarantula is the first step toward a rewarding pet ownership experience. Be prepared to invest time in research and setup before acquiring your tarantula.
Where to Buy
When acquiring a Mexican Red Knee Tarantula, sourcing from reputable breeders or specialized reptile stores is highly recommended. These vendors typically have experience with tarantulas and can provide healthy specimens with accurate information regarding their age, sex, and lineage. Avoid purchasing tarantulas from general pet stores that may lack specific knowledge about their care. Breeders are often passionate about tarantulas and can offer valuable advice. Online marketplaces can be an option, but always research the seller thoroughly, checking reviews and ensuring they offer a guarantee of the tarantula’s health and safe shipping practices. Visiting a local reptile show can also provide opportunities to meet and purchase tarantulas directly from breeders, allowing you to ask questions and assess the specimens in person.
What to Look For

When selecting a Mexican Red Knee Tarantula, several indicators point to a healthy specimen. Look for a tarantula with a plump abdomen, indicating it is well-fed and hydrated. The legs should be intact and move freely, without any signs of injury or paralysis. The fangs should be visible and appear in good condition. Avoid tarantulas that appear lethargic, have a shriveled abdomen, or show any signs of mites or other parasites. The carapace (the top shell) should be smooth and unblemished. Observe the tarantula’s behavior; it should be alert and responsive to its environment, not hiding constantly. Request information about the tarantula’s last molt, as this can provide insight into its growth rate and overall health. Buying a juvenile tarantula is often best, giving you the most time to observe and bond with your pet.
Setting Up the Perfect Enclosure
Creating the right environment is crucial for the well-being of your Mexican Red Knee Tarantula. The enclosure must provide a secure and comfortable habitat that mimics the tarantula’s natural environment. This involves considering the size of the enclosure, the type of substrate, the availability of hiding places, and the maintenance of appropriate temperature and humidity levels. A well-designed enclosure not only ensures the tarantula’s physical health but also helps reduce stress, allowing it to exhibit its natural behaviors and thrive in captivity. The setup should be both functional and aesthetically pleasing, creating an environment that you can enjoy observing, while being safe and stimulating for the tarantula.
Enclosure Size
The size of the enclosure should be appropriate for the size of the tarantula. As a general guideline, a juvenile Mexican Red Knee Tarantula can be housed in a small terrarium, approximately 5-10 gallons in size. As the tarantula grows, upgrade to a larger enclosure. For adult tarantulas, a 10-20 gallon terrarium is usually adequate, with the dimensions favoring floor space over height. Avoid excessively large enclosures, as they can make it difficult for the tarantula to find food and may cause it to feel insecure. The enclosure should have a secure lid to prevent escape, especially considering the tarantula’s potential to climb. Ensure proper ventilation to maintain air quality and prevent the build-up of moisture, which can foster mold and bacteria. The enclosure should be made of transparent material, allowing you to easily observe your tarantula.
Substrate and Furnishings

The substrate serves as the bedding for your tarantula and is crucial for maintaining humidity and providing a burrowing environment. The ideal substrate for a Mexican Red Knee Tarantula is a mixture of coconut fiber, peat moss, and a small amount of vermiculite or sphagnum moss. This combination retains moisture effectively while allowing for proper drainage and ventilation. The substrate should be deep enough (at least 4-6 inches) to allow the tarantula to burrow if it chooses to. Include a hide, such as a piece of cork bark or a pre-made tarantula hide, where your tarantula can retreat and feel secure. Provide a shallow water dish with fresh, clean water at all times. Decorate the enclosure with artificial plants and other decorations to create a more natural and stimulating environment, but ensure all decorations are non-toxic and securely placed to prevent accidental injury.
Temperature and Humidity
Mexican Red Knee Tarantulas thrive in a temperature range of 75-85°F (24-29°C). Maintaining this temperature is crucial for their metabolism, digestion, and overall health. You can use a heat mat placed on the side or back of the enclosure to provide gentle warmth, but avoid placing it directly under the enclosure, as this can cause the substrate to dry out quickly. Use a thermometer to monitor the temperature and ensure it stays within the recommended range. The humidity level should be kept at around 60-70%. This can be achieved by misting the enclosure with water a few times a week, depending on the ventilation and the type of substrate used. Use a hygrometer to monitor the humidity levels. Proper ventilation is also essential to prevent mold and bacterial growth. Avoid excessive condensation inside the enclosure, as this can be a sign of too much humidity.
Feeding Your Tarantula
Proper nutrition is fundamental to the health and longevity of your Mexican Red Knee Tarantula. Understanding their dietary needs, feeding frequency, and the types of insects suitable for their consumption is essential. A balanced diet ensures that the tarantula receives the necessary nutrients to grow, molt successfully, and maintain its vibrant colors. It is important to provide a variety of prey items, taking into consideration the size of the tarantula and its growth stage. Overfeeding should be avoided to prevent obesity, which can negatively affect the tarantula’s health. Regular feeding schedules, combined with careful observation, will help you recognize when your tarantula is eating well and when it may have health issues.
What to Feed

The primary diet of the Mexican Red Knee Tarantula consists of insects. Crickets, roaches (such as dubia roaches), mealworms, and superworms are suitable food options. The size of the prey should be appropriate for the tarantula’s size. As a general rule, the prey should be no larger than the tarantula’s body. For juveniles, smaller insects like pinhead crickets are appropriate. Adults can be fed larger crickets or roaches. It is best to avoid feeding wild-caught insects, as they may carry parasites or pesticides that can harm your tarantula. Gut-load the insects with nutritious food like vegetables and commercial insect food before feeding them to your tarantula. This ensures the tarantula receives a more balanced and nutritious meal. Remove any uneaten prey within 24 hours to prevent stress and potential harm to the tarantula.
Feeding Frequency
The feeding frequency depends on the tarantula’s age and growth stage. Juvenile tarantulas should be fed more frequently, typically 2-3 times per week. Adult tarantulas can be fed once a week or every other week. During molting, the tarantula will typically stop eating, which is a normal behavior. Do not offer food during this period. Observe your tarantula’s behavior and abdomen size to determine the appropriate feeding schedule. A plump abdomen indicates a well-fed tarantula. If the tarantula refuses food, it might be preparing to molt or may not be hungry. Always provide fresh water, regardless of feeding frequency, to maintain hydration.
Watering Your Tarantula
Providing fresh, clean water is essential for the health of your Mexican Red Knee Tarantula. The water dish should be shallow enough to prevent drowning, especially for juveniles. Use a small, easily accessible water dish, like a bottle cap or a commercial tarantula water dish. Refill the water dish regularly, at least every other day, and clean it frequently to prevent bacteria and mold growth. Alternatively, you can mist the enclosure with water to provide a source of moisture, ensuring the substrate stays appropriately humid. The frequency of misting depends on the humidity levels in your enclosure. Monitoring the humidity with a hygrometer will help you determine how often you need to mist. Always ensure there is a source of water available for your tarantula.
Handling Your Mexican Red Knee Tarantula

Handling a Mexican Red Knee Tarantula should be approached with caution. While they are generally considered docile, they can bite if they feel threatened or startled. Bites from tarantulas are generally not life-threatening but can be painful and cause local swelling, redness, and itching. Minimize handling to reduce the risk of injury to both you and the tarantula. Tarantulas can also be easily injured if dropped, which can lead to serious harm or death. Educate yourself and understand the risks before attempting to handle your tarantula. Always prioritize the tarantula’s well-being and safety, and avoid handling unless absolutely necessary.
When to Avoid Handling
There are several situations where handling should be avoided. Never handle a tarantula immediately after a molt, as their exoskeletons are soft and vulnerable. Avoid handling when the tarantula is eating, as it may feel threatened and more likely to bite. Do not handle a tarantula if it appears agitated or defensive, exhibiting a threat posture. Avoid handling if you are unsure of its temperament or if you are unfamiliar with tarantula behavior. Young children should never handle tarantulas without close adult supervision and guidance. Always assess the tarantula’s mood and behavior before considering handling. If the tarantula shows signs of stress, such as flicking hairs from its abdomen or raising its front legs, it is best to leave it alone.
Signs of a Stressed Tarantula
Recognizing the signs of a stressed tarantula is crucial for ensuring its well-being. A stressed tarantula may exhibit certain behaviors indicating it is uncomfortable or threatened. One common sign is flicking hairs from its abdomen (urticating hairs). This is a defense mechanism and a clear indication to back off. The tarantula may also raise its front legs in a threat posture, exposing its fangs. Other signs include rapid movement, hiding, and refusing to eat. If your tarantula is spending excessive time in its hide, it may be stressed. Providing a safe and secure environment with minimal disturbance can help reduce stress. Avoid loud noises, sudden movements, and overcrowding in the enclosure to minimize stress and maintain a healthy environment for your pet.
Common Health Issues

While Mexican Red Knee Tarantulas are generally hardy, they can be susceptible to certain health issues. Being aware of these potential problems and taking preventative measures is essential for maintaining your tarantula’s health. Regularly monitoring the enclosure for signs of mold, parasites, and other health concerns is crucial. Providing a clean and appropriate environment, alongside a balanced diet, will help minimize potential health risks. Early detection and treatment are key to ensuring your tarantula lives a long and healthy life. Consulting with a veterinarian who specializes in exotic animals is always a good idea if you have concerns about your tarantula’s health.
Moulting
Moulting is a natural process where the tarantula sheds its exoskeleton to grow. This process is essential for the tarantula’s development and should not be interfered with. Before moulting, the tarantula will often become lethargic and may stop eating. It may also lie on its back. Do not disturb the tarantula during the moulting process. Ensure that the humidity is appropriate during moulting, as this aids the process. The tarantula will be vulnerable for a period after moulting, so avoid handling it. Once the new exoskeleton has hardened, the tarantula can resume its normal activities, and feeding can resume. Provide a clean and undisturbed environment during the moulting process.
Parasites and Diseases
Tarantulas are susceptible to certain parasites and diseases, although these are relatively uncommon with proper care. Mites are a common problem, often appearing as small, moving dots on the tarantula or in the enclosure. If you suspect mites, isolate the tarantula and clean the enclosure thoroughly. You can use mite treatments specifically designed for tarantulas, but always follow the instructions carefully. Fungal infections can also occur if the enclosure is too humid. Ensure proper ventilation and humidity levels to prevent fungal growth. Bacterial infections can arise from contaminated food or a dirty enclosure. Regular cleaning and sanitation are essential to prevent bacterial infections. If you notice any signs of illness or parasites, consult with a veterinarian specializing in exotic animals for proper diagnosis and treatment.
Conclusion

Caring for a Mexican Red Knee Tarantula can be a rewarding experience. By following the guidelines provided in this guide, you can provide your tarantula with a comfortable, safe, and stimulating environment. From selecting the right enclosure and substrate to understanding the importance of feeding and handling, every aspect of their care is vital for their overall well-being. Regular observation of your tarantula, paying attention to its behavior, and taking proactive measures to address any potential health concerns will contribute to a long and fulfilling life for your pet. Enjoy the unique experience of owning and observing the magnificent Mexican Red Knee Tarantula, one of the most captivating creatures in the world of exotic pets. With the right knowledge and dedication, you can ensure your tarantula thrives and bring you years of enjoyment.
