The term for an animal that eats only meat is "carnivore." Carnivores have adaptations such as sharp teeth and claws that enable them to hunt and consume other animals efficiently. They are found in various ecosystems and include species ranging from large predators like lions and wolves to smaller creatures like weasels and certain bird species. While some carnivores may occasionally eat plant matter, their primary diet consists of meat. This classification is essential in understanding ecological relationships and food chains, where carnivores play a crucial role in maintaining the balance of ecosystems.