Abstract: A trap for killing small animals comprising a first trap member and a second trap member slidingly advanceable relative to one another between a set or open alignment and a closed alignment. The trap members are baisingly urged toward said closed alignment by biasing means. The first trap member including means forming a first animal engaging edge and the second trap member including means forming a second animal engaging edge such that when the trap members are positioned in the open alignment the animal engaging edges form a trap opening. The trap includes set and trigger means for maintaining the trap members in the open alignment until engagement or activation of the set and trigger means by an animal to be trapped.