 Item █ SCP-548 Object Class █ Euclid Special Containment Procedures SCP-548 is to be kept at 20°C in a 50cm x 50cm terrarium. The enclosures will be composed of modified borosilicate glass with high thermal shock resistance, or if other materials not rendered brittle by sudden temperature changes are greater than 50°C. In the event that SCP-548 makes an active attempt to grind through the terrarium walls, the enclosures will be flooded immediately with 500ml liquid nitrogen and the subject removed temporarily to a reinforced steel terrarium. Subjects will be fed mice once every 4 days. SCP-548 should not be handled except as needed for testing. Handlers must be at least cursorily familiar with tarantula behavior and wear heavily insulated gloves, should subject display any aggressive behavior, cease handling promptly. If bitten, personnel should be treated immediately for hypothermia and frostbite. Active and treaserastic warming with heated fluids is indicated for severe bites. Description SCP-548 is a female cobalt tarantula with a body about 7cm in length and legs roughly 11cm. Its venom undergoes a highly endothermic reaction on contact with living tissue. A single bite injecting less than 0.5ml venom causes an average temperature drop of 38°C in the affected area. One bite is sufficient to cause localized frostbite in a human and may even be lethal should the venom reach the central circulatory system. Victims smaller than SCP-548 are frequently frozen solid. SCP-548's feeding structures are normal for a spider of its species except for the maxillae, which are extremely hard and serrated. It feeds by delivering a venomous bite, then dragging the prey to a safe place while it cools. While secluded, it proceeds to grind the prey's still frozen tissue into edible fragments. This feeding style requires unusual mouthpart strength. Addendum SCP-548, like most haplot-palmouthed species, usually avoids contact with humans. If cornered, however, it quickly turns aggressive attempting to bite and perceive the attacker before fleeing. The object may be frozen solid with no apparent ill effects. It has survived repeated freezing each time resuming normal behavior upon thawing. Further research is required to ascertain the mechanism of its resistance and an attribute of suitability for long-term storage.