Praying mantises are carnivorous insects that eat other animals, mostly arthropods. They are generalist hunters and will occasionally attack larger prey. Some common prey that most mantises frequently target include insects, bugs, spiders, worms, larvae, small mammals, birds, small reptiles, small amphibians, and fish. Larger species of mantises will have access to more food compared to smaller species. Although some people feed their pet mantis raw meat, this is not recommended. When it comes to mantis diets, it is best to stick with foods they eat in the wild. Baby pet mantises tend to eat smaller insects than adult mantises. As soon as they are born, nymphs are able to hunt for their own food.