Cat's prey refers to animals that a cat hunts and kills for food. There are several synonyms for cat's prey, such as quarry, game, and victim. Quarry specifically refers to an animal being hunted for sport or food. Game is also used to describe an animal hunted for sport or food, but it can also refer to a contest or competition. Victim can be used more broadly to describe any creature that is the target of an attack or harm. Some other terms that could be used as synonyms for cat's prey include quarry, kill, prey, target, and food source. However, each of these terms conveys a specific connotation, so it's important to choose the right word for the context.