"A stray dog foraging for food winds up dining on some genetically altered rats, and the meal changes him for the worse. A family's young daughter, little Ariana, is suddenly nipped by the infected dog, and, soon, she is on board a cruise ship and out to sea." ― paraphrased from this book's product page on Amazon.com website as of 2019-02-08.
Source · ISFDB CC BY 4.0