Biology
Animal Locomotion
Quick fact
A flea can accelerate at over 100 times the force of gravity during a jump—more than a space shuttle launch.
Why this is interesting
You walk, run, and swim—but have you ever wondered how a gecko climbs glass or how a dolphin glides so effortlessly? Animal locomotion is a world of incredible adaptations that defy physics in surprising ways.
Read the full explanation
Understanding Animal Locomotion
Animal locomotion refers to the diverse ways animals move to find food, escape predators, and reproduce. Common modes include walking, running, swimming, flying, slithering, and climbing. Each mode is shaped by the animal's anatomy and the physical demands of its environment. For example, land animals use legs to push against the ground, while fish use fins and body undulations to push against water. Birds and insects have wings that generate lift in air. The key is generating force and controlling balance to move efficiently.
A deeper explanation
At its core, animal locomotion involves converting chemical energy (from food) into mechanical work through muscles. Muscles contract to move limbs or deform the body. The type of gait (e.g., walk, trot, gallop) optimizes speed and energy use. In water, swimming animals rely on drag and lift; streamlined bodies reduce resistance. Flying requires wings that create lift via air pressure differences. Many animals also have special adaptations: geckos use van der Waals forces on their feet, and snakes use lateral undulation. The study of locomotion reveals principles of physics like Newton's laws and conservation of energy, showing how form follows function across species.