What Is a Carnivore - Big Science Ideas Author:Bobbie Kalman This book is suitable for ages 6 to 10 years. Carnivores are animals that eat other animals. This clearly written book uses detailed images to look at insect, fish, frog, reptile, arthropod, and mammal carnivores and how they hunt or find their food. It also explains terms such as predator and prey and introduces the basics of a food chain.