Chaco Golden Knee Tarantula

Origin and Habitat: Native to the sweeping, dry scrublands and harsh grassy Pampas of the Gran Chaco region in Argentina and Paraguay. It is a highly opportunistic, heavy-bodied terrestrial burrower that biologically evolved to survive extreme, punishing seasonal temperature swings and harsh droughts by aggressively digging deep into the dry earth.

Morphology: An absolute, breathtaking, massive giant. Heavy, thick adult females regularly achieve a staggering 8-8.5 inch (20-22 cm) leg span and are virtually immortal (easily living 20-25 years). The massive, hairy body is a soft chocolate/pinkish-brown, but the defining, world-famous feature is the blindingly bright, vibrant golden/yellow stripes painted across every single leg joint (the 'knees') violently contrasting against dark leg segments. They are massive, heavy display pieces.

Defensive Behavior: STAGGERINGLY DOCILE AND CALM. They move with agonizing, ponderous slowness, completely lacking the terrifying teleporting speed of arboreal species. They practically never display threat postures and biting is astronomically rare. As a New World tarantula, their primary and only defense is friction-kicking microscopic urticating (barbed) hairs from their abdomen if heavily harassed. While not venomous, these hairs act like invisible fiberglass and cause severe, maddening itching on skin, and catastrophic hospital visits if accidentally rubbed into human eyes. Uniquely, they possess a hilarious, bizarre 'bulldozer' personality, spending hours aggressively dragging huge clumps of dirt around their tank to re-landscape their home to their liking.

The Shallow Terrestrial Tank (The Drop Warning): Because they are so unbelievably massive and heavy, a standard 24x18x12 inch (60x45x30 cm) glass tank is absolute perfection. GRAVITY IS THE ULTIMATE FATAL ENEMY: The enclosure MUST strictly be shallow, and the dirt substrate MUST be piled high. If a massive, heavy female idiotically climbs the glass and falls even a few inches onto a hard object or shallow dirt, her huge abdomen will violently rupture like a dropped water balloon, instantly killing her. Provide thick, deep, bone-dry peat moss/coco fiber and a heavy half-log cork hide directly on the soil.

Bulletproof Climate: The undisputed most indestructible, bulletproof tarantula in the hobby. They perfectly thrive at standard human room temperatures (72-82°F / 22-28°C) and completely, rigidly abhor all heat lamps and heating pads (which often fatally cook or dehydrate them). Humidity MUST remain comfortably low (50-65%); they violently hate wet, muddy swamp conditions. The substrate must be overwhelmingly bone-dry. The ONLY humidity they require strictly comes from permanently maintaining a heavy, wide, shallow water dish that they can easily drink from (they will hilariously constantly fill this dish with dirt).

Voracious Diet: They are slow but incredibly heavy eaters, happily destroying large roaches (Dubia/Red Runner), adult crickets, and massive locusts. BIZARRE FASTING WARNING: It is completely normal, biological behavior for a massive adult female to randomly, stubbornly refuse all food for 6-12 unbroken months prior to a molt. NEVER panic. If she violently seals the entrance of her burrow with thick silk and heavy dirt barricades, NEVER dig her up; she is preparing for a highly vulnerable molt. NEVER leave live crickets wandering in the tank if she is barricaded, as they will chew through her soft, molting body.

Handling Warnings: Despite being the absolute calmest, most docile tarantula on Earth, handling is never recommended. Holding a massive, heavy tarantula in the air strictly endangers the spider's life; a tiny human flinch or accidental drop guarantees a fatal, horrific rupture of her abdomen. Additionally, their violently itchy urticating hairs will absolutely cover your hands and clothes, transferring an invisible, agonizing rash to your eyes or face hours later.