Borne

"From the author of the Southern Reach Trilogy comes a story about two humans, and two creatures. The humans are Rachel and Wick - a scavenger and a drug dealer - both with too many secrets and fears, ready with traps to be set and sprung. The creatures are Mord and Borne - animal, perhaps plant, maybe company discard, biotech, cruel experiment, dinner, deity, or source of spare parts." -- from Publisher's description.