Shamlessly horked from Paper Brain Games' adventure module, Menace From The Wasteland, by C.T. McGrew.
Both name and concept are his. I just statted up and "drew" the critter, because it tickled me silly. And you can buy the slig-tastic sandbox adventure here!
No. Enc.: 1d10 (3d6)
Movement: 30' (10')
Armor Class: 7
Hit Dice: 2
Attacks: 2 (2 radulae)
Damage: 1d4 / 1d4
Hoard Class: None
Sligs are fleshy, 8'-12' long creatures raised for their succulent (albeit gamy) meat. Able to climb vertical surfaces and wriggle through narrow apertures with ease, they require specialized enclosures.
Sligs feast on rotting vegetation, rancid meat, and biological waste...and they harmlessly metabolize all toxins and radioactivity. Such hardiness makes them valuable livestock, indeed.
While non-poisonous, the slime from wild sligs deters most predators (particularly avians). Slathering the goo on one's person reduces the chance of wilderness Random Encounters from 1-2 per day, instead of the standard 3-4; however, anyone utilizing the fetid substance suffers a loss of -2d4 CHA points for the duration. Domesticated sligs are bred so as to minimize slime production.
Mutations: Toxic Weapon ("Repellent Coating")