Animals

Animals are living organisms that belong to the kingdom Animalia. They are characterized by their ability to move, respond to stimuli, reproduce sexually or asexually, and consume organic matter for energy. Animals are multicellular and typically have specialized cells organized into tissues and organs. They exhibit diverse forms, sizes, and behaviors and are classified into various groups, including mammals, birds, reptiles, amphibians, fish, and invertebrates. Most animals are heterotrophic, meaning they must ingest other organisms or organic material for nutrition. Animals play essential roles in ecosystems, such as pollination, decomposition, and as part of food chains. They can inhabit various environments, from terrestrial to aquatic realms, and have complex interactions with their surroundings and other organisms.