Here's a little beastie that I just put together now. Astute players will recognise my source material
PINBACK’S MARSH BALL
A small omnivore hunter found on several worlds in the Spinward Marches, feeling most at home in swampy or wet environments. Excellent climbers, Marsh Balls spend the majority of time in trees as they are excellent climbers.
Pinback’s Marsh Ball, purportedly named after the scout who discovered it, is a spherical creature consisting of several specialised symbiotic organisms that cannot survive independently. The main body comprises of an gas filled sack that is normally brown in colour, and mottled with rings of a darker brown exterior with a pale interior. When excited, the rings change colour to bright blue. The sack also contains the creature’s brain, digestive tract, and other organs. When a bright light is shined through the sack it proves to be somewhat translucent, exposing the supporting cartilage and organs located in the lower quarter. At the bottom of the sack are two scaled partially webbed claws between which is the combined mouth and vent. While the Marsh Ball will quite happily subsist on foraged plant matter, they will happily consume small animals and insects opportunistically.
Pinback’s Marsh Balls can make reasonable pets. They are loyal and relatively affectionate, if not somewhat wilful. They can become bored easily if not engaged in a stimulating manner. A mistreated Marsh Ball can become aggressive and extremely dangerous. Because of their tendency to take small prey, Marsh Balls can be frequently found on spaceships to keep vermin under control.
Hits 7
Speed 4m
Skills Melee (unarmed) 2, Recon 1, Stealth 1, Survival 2
Attacks Claws D3+1
Traits Small (-2)
Behaviour Omnivore, Hunter