A snail whose slime is extremely flammable, native to a region where the fallen civilization had used alchemy to fuel a petrochemical industrial base; the odd effluvia and runoff have resulted in creatures that themselves generate thick, oily secretions. Your pet loved to feed on waxy things, and made an excellent letter-opener, as long as you kept it from crawling onto the envelope to have a snack. A particular treat was the rinds from cheese wheels, which could keep it occupied for a day or more of careful nibbling, and the slime afterwards would produce a much cleaner, clearer flame than usual when used to fill your work lantern.
