The term used for an animal that hunts other animals for food is "predator." Predators are typically at the top of the food chain and play a vital role in maintaining the balance of ecosystems. They help control the populations of their prey, which can include herbivores and other smaller carnivores. This relationship is essential for the health of the environment, as it contributes to biodiversity and helps prevent overgrazing or overpopulation of certain species. Predators exhibit various hunting strategies and adaptations that make them effective in capturing their food.