Shivers: The Animal Rebellion by M.D. Spenser

WILD HORSES! DIVE-BOMBING ROOSTERS!! ROWDY RATS!!! Winston, a computer geek, goes to visit his cousin's farm. He knows he's off on a boring vacation. Only it turns out to be anything but boring. Winston and his cousin soon find out that the animals are very restless -- and very dangerous. Winston must use his brain power if he and his cousin are to GET THROUGH THE NIGHT ALIVE!!! Book four in the popular Shivers series of scary books for kids.