Tiddlet

Tiddlets are small, furry creatures introduced in The trouble with Tiddlets contract in which the Tiddlet Breeder asks the player to deliver a small group to the end of the sector. A Shady Buyer contacts the player and offers to pay extra for the Tiddlets for mysterious purposes.

A child and adult Tiddlet, and a carrying crate.

Tiddlets breed telepathically and multiply during every FTL Jump the player takes. They can quickly overrun a ship, leading to offloading times that can sometimes result in ships running out of resources.