Varied Appetite. Fire monkeys are omnivores, eating fruit, nuts, insects, small mammals, crabs, and fish. Given enough time, rather than devouring their food raw, fire monkeys create elaborate dishes of their favorite foods and cook these dishes over small fires, which they light with their spark ability. Fire monkeys also enjoy trying new and exotic foods prepared by humanoid creatures, especially foods made with flour and sugar. Most fire monkeys are very adventurous eaters, though they tend not to like the taste of beef and lamb.