Pickles vs. the Zombies — Angela Misri

The comfortable life of Pickles, a calico house cat, is turned upside down when humans succumb to the zombie apocalypse. She doesn't know where her "pet," the human child Connor, has gone, only that zombies are everywhere.

Determined to find Connor, Pickles sets off with her cat friends and a streetwise raccoon, exploring a world she has only seen through a window. Fending off human zombies, street cats from the wrong side of the track and a ferocious gang of chipmunks, Pickles and her crew search for remnants of human society