All animals get their energy from the food they eat. Their bodies break down the molecules in food through a process called metabolism, which releases energy that is used for various biological functions such as growth, reproduction, and movement. Some animals, like herbivores, obtain their energy by consuming plants, while others, like carnivores, obtain their energy by consuming other animals. Ultimately, the energy in food comes from the sun, as plants use sunlight to convert carbon dioxide and water into sugars through photosynthesis.