Snoct Sneyd was an Iffalian.
In 2372, Sneyd was part of a cleaning crew from Daborat V who were assigned to clean a Jem'Hadar vessel. Sneyd fell asleep, and didn't awake until after the vessel had put to space. Six months later, Worf and Kira Nerys encountered Sneyd aboard the vessel, and Sneyd, alarmed by seeing Worf, sank his fangs into Worf's right shoulder, releasing a potent venom. Worf recovered, and he helped them when the vessel reached Daborat V. (DS9 novel: The Heart of the Warrior)