An animal is a living organism that belongs to the kingdom Animalia.

An animal is a living organism that belongs to the kingdom Animalia. Animals are multicellular, eukaryotic organisms that are capable of movement, usually by means of muscles. They obtain nutrients by consuming other organisms or organic matter, and they typically have sensory organs that allow them to respond to their environment.

Animals are incredibly diverse and can be found in virtually every habitat on Earth, from the deepest oceans to the highest mountains. There are millions of different species of animals, ranging from tiny insects and microscopic organisms to massive elephants and blue whales.

Some common characteristics of animals include the presence of specialized cells and tissues, a digestive system, a nervous system, and the ability to reproduce sexually. While there is a wide variety of animals, they are all united by their shared biological characteristics and the fact that they are living, breathing beings that play important roles in the ecosystems they inhabit.