What to Think About Before Getting a Brazilian Black Tarantula

If you’re thinking about getting a Brazilian Black Tarantula (Grammostola pulchra), you’re in for a treat. These spiders are calm, low-maintenance, and absolutely stunning with their velvety jet-black coloring. I’ve worked with a few species over the years, and the Brazilian Black stands out as one of the most beginner-friendly tarantulas out there — but that doesn’t mean you should jump in without knowing what you’re getting into.

Here’s what you really need to know to decide if this spider is right for you — and how to set them up for a healthy, stress-free life.

What Makes the Brazilian Black a Top Pet Tarantula?

First off, they’re famously docile. This is a New World species (native to Brazil and Argentina), which means less aggression and lower venom potency compared to Old World spiders. They’re known to be slow-moving, calm, and rarely defensive — perfect for someone new to tarantula keeping.

They can still flick urticating hairs when stressed (those tiny barbed hairs that can irritate your skin or eyes), but they’re not quick to use them. And while they can bite, it’s almost unheard of unless seriously provoked. As long as you’re respectful and gentle, you’ll likely never run into trouble.

Also, if you're looking for a long-term companion, females can live 20 years or more! Males, on the other hand, usually live 6–8 years.

A Few Things to Know Before You Buy

• Cost: Expect to pay around $100 or more, depending on the spider’s age and size. They’re slow growers, so adult females are especially pricey.
• Handling: While you can handle them occasionally (I use a gentle coaxing method rather than picking them up directly), they generally prefer to be left alone. I stick to observing mine and only handle for maintenance or special situations.
• Single Housing Only: Don’t keep two tarantulas in the same enclosure. They aren’t social, and one will likely end up as dinner for the other — especially during molting.
• Breeding is tricky: Females are larger and known to eat males. If you're not experienced, it's best to avoid breeding attempts.

Setting Up Their Home

Brazilian Blacks are terrestrial, not climbers, so give them more floor space than height. A 20"x20" enclosure works well. Here's what I usually prep:

• Substrate: Use 4 inches (10 cm) of coconut fiber or pesticide-free soil. They like to burrow and need soft, dry substrate.
• Decor: Keep it simple — a hide (like cork bark), a few rocks or branches, and open floor space.
• Humidity: Aim for 65–70%. Misting lightly or just keeping a full water dish usually does the trick. Adjust with ventilation if it gets too damp.
• Temperature: 75–80°F (24–27°C) is your sweet spot. You can use a heat mat on the side of the tank (never underneath) or a low-wattage heat lamp if needed. Always monitor with a thermometer.

Make sure the lid is secure — they’re stronger than you think and can squeeze through small gaps.

Feeding and Routine Care

• Diet: Feed appropriately sized crickets, roaches, or mealworms a couple of times a week. Prey should never be larger than the spider’s abdomen.
• Water: A shallow dish is fine. Change it daily — they’ll drink from it, even if you don’t catch them in the act.
• Molting: This is crucial. When your tarantula is about to molt, she’ll stop eating and may hide more. Do not feed during this time — and definitely remove any uneaten prey. Let her molt in peace and wait a few days after it’s done before offering food again.

Molting can be a vulnerable time, so keep the humidity slightly higher and avoid disturbing her.

Health and Safety Tips

• Handling: If you choose to handle, be gentle. I prefer guiding them onto my hand rather than picking them up. Avoid sudden movements, and always keep your tarantula close to the ground in case she falls — their bodies are fragile.
• Watch for Illness: They’re hardy, but issues like oral nematodes or molting problems can happen. If you see strange white discharge around the mouth or your spider struggles during a molt, it’s time to consult with an exotic vet.

Final Thoughts

Brazilian Black Tarantulas are one of the chillest, most rewarding tarantula species to keep. They’re not flashy in behavior, but their sleek black look and calm nature make them a joy to care for. As long as you’re comfortable watching more than handling, and you’re ready to commit to proper care (especially for the long-lived females), they’re a fantastic addition to your exotic pet family.

Got any questions or want to share your own experience with this beauty? We’d love to hear from you.