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http://www.sarna.net..._War:_Companion
Some of my favorites:
http://www.sarna.net/wiki/Blood_Limpet
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Blood Limpets live in swamps and react to body heat. When they sense a potential victim, they rise above the muck and run towards their prey. Although they do not cooperate as a pack or swarm, they often attack in masses of individuals because most potential prey will attract several Blood Limpets at the same time.
It is noted that the Blood Limpets gave the early colonists of Proserpina "endless nightmares".
It is noted that the Blood Limpets gave the early colonists of Proserpina "endless nightmares".
http://www.sarna.net/wiki/Crana
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These aggressive creatures measure almost a meter in length. They possess multiple large claws, are covered in thick, bony scales and have a tube like mouth. They feed upon warm-blooded creatures (including humans) and attack their targets by clawing onto a victim while trying to insert their mouths into a major blood vessel. Once attached, the crana's mouth contains a paralyzing toxin that immobilizes its prey while it feeds upon the target's blood. On human-sized prey or larger, the crana may deposit up to 50 eggs in the victim (crana are asexual and can lay eggs once every 25 days). If a victim of a crana attack is not killed, but was injected with eggs, they will be terribly ill until the eggs are removed. If the eggs are not removed by a doctor within about two to three weeks, then the eggs will hatch and kill the victim as the larvae burrow out of the body.
When the crana cannot find food, they enter into a dormant state and can remain in this state for a long period of time. Any heat sources that approach nearby (living or mechanical) will awaken the crana. Sometimes crana have been found clinging to heat sink exhaust ports on battlemechs.
By the 31st century, the crana have become immune to even the most deadly toxins. While the crana prefer warm jungle environments, they can survive almost anywhere.
When the crana cannot find food, they enter into a dormant state and can remain in this state for a long period of time. Any heat sources that approach nearby (living or mechanical) will awaken the crana. Sometimes crana have been found clinging to heat sink exhaust ports on battlemechs.
By the 31st century, the crana have become immune to even the most deadly toxins. While the crana prefer warm jungle environments, they can survive almost anywhere.
http://www.sarna.net/wiki/Trachazoi
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Commonly known as "brain-eaters", The trachazoi are small, powerful mammals (no larger that small dogs) that inhabit the woodlands on a variety of planets. Though spread across the Inner Sphere and beyond on a variety of worlds, they are rare.
The trachazoi are an ambush predator. They hunt at night by waiting for their prey to pass under the trees where they perch. Once a target has been selected, the trachazoi fall from the trees onto the their prey's head. Using their powerful fore-claws, they then split the skulls of their prey and consume the brains within. If the trachazoi miss their target, they quickly run away as they are no match in a direct confrontation.
The trachazoi are an ambush predator. They hunt at night by waiting for their prey to pass under the trees where they perch. Once a target has been selected, the trachazoi fall from the trees onto the their prey's head. Using their powerful fore-claws, they then split the skulls of their prey and consume the brains within. If the trachazoi miss their target, they quickly run away as they are no match in a direct confrontation.
