Discover the animal kingdom — from classification and symmetry to behavior, locomotion, and body systems.
Learn how body symmetry and structural organization define major animal groups and influence function and movement.
Study how animals obtain, process, and utilize food, from filter feeders to predators, and herbivores to omnivores.
Discover how animals move — from crawling and flying to swimming — using specialized structures and muscle coordination.
Understand how animals reproduce and develop, from fertilization to embryonic growth and birth.
Explore how organisms regulate water and solute balance to maintain internal stability, from single-celled life to complex animals.
Discover the diverse strategies animals use to survive in freshwater, saltwater, and dry environments by regulating water and salt levels.
Explore the stages animals pass through from birth to adulthood, including complete and incomplete metamorphosis.
Explore how animals evolve structural, physiological, and behavioral traits to survive in diverse environments.