From the Stars Without Number Compatible – Alien Database
Blood Drain. Heart tick blood drain inflicts 1d3 points of damage to the target and in the same round triggers the Eggs Laying special attack.
Eggs Laying. Heart tick injects its eggs through its tube-like mouth. The creature lays 2d10 eggs into the host. Each egg reaches full maturation in around two weeks, becoming a one-centimeter-long heart tick. When each heart tick sprouts out of the host’s body, it inflicts 1 point of damage.
Leap Attack. Heart Tick can leap to a distance that is double its spring speed. A standard specimen can leap up to a distance of 24 meters. A leaping attack grants the Heart Tick +4 on its hit roll to each attack with the legs.
COMBAT & TACTICS
Heart Tick relies on its leap to deliver its attack. When a target comes within range, the tick leaps to drive its four hooks into the target’s flesh. If all four legs successfully hit the target, then the heart tick automatically hits with its tube-like mouth. The tick sucks blood for one round and then breaks away.
DESCRIPTION
Heart ticks are nasty and dangerous bugs that measure from 10 to 20 centimeters. They are covered by a thick chitinous plating, and their color ranges from black to dark gray. The standard specimen has four barbed legs and a pair of vestigial wings placed above its abdomen. Each leg ends with a piercing hook capable of penetrating armors.
HABITAT
Heart ticks are not very different from common rats when talking about adaptability. They can thrive on planets, space stations, and starships. Wherever life forms can live, heart tick can thrive and reproduce. Heart ticks are considered responsible for the destruction of isolated settlements on planets and asteroids, due to their ability to quickly reproduce and spread among the population.
BIOLOGY
Heart ticks are primitive life forms that can evolve on any planet with the basic conditions for hosting life. They quickly adapt to a new environment within two generations, so many species and subspecies exist. It is not unheard of for criminal organizations to employ these bugs to deliver crude but effective biological attacks.