Feral

She lives in fear―of the two-legs, of the noisy, massive trains that scream in and out of the station, of cats and rats and dogs and the dark of the tunnels. She lives in the subway, where the hard shoes kick her ribs, where shrill voices beat her ears, where she subsists on the garbage of the humans. But the little cat walks alone.
Until she meets Candlewax, a street kid exiled from the subway tunnels, and Katherine, a student photographer who loves her on sight. From these two she learns that trust can banish fear and love provides a home wherever you are.