SCP-098 is a pack of an unknown species of crabs. These specimens reach larger sizes than normal for land-dwelling arthropods, at 40 centimeters tall and as large as 60 centimeters across. SCP-098 demonstrates pack-hunting behavior when attacking prey. When specimens detect a prey animal, they will attempt to surround it. They will mimic the sounds made by the creature, apparently to confuse it or to draw it into position. When ready, one specimen will approach the prey animal. When its attention is fixed on the first specimen, others will move behind the prey and attempt to cut the tendons of the legs or other limbs. They will continue to mimic the sounds the prey animal makes to disorient it. After making a cut, a specimen of SCP-098 will spit a viscous mucus over the wound. This substance hardens rapidly, preventing blood loss or infection. This continues until the prey animal is completely immobilized.