Biological intelligence refers to the cognitive capacity exhibited by living organisms, particularly humans and animals. It encompasses the ability to acquire, process, and apply knowledge, solve problems, adapt to changing environments, and exhibit complex behaviors. Biological intelligence is driven by neural networks in the brain and enables organisms to perceive, learn, reason, and interact with their surroundings. It underlies a wide range of mental faculties, including consciousness, memory, and decision-making, allowing organisms to thrive in their respective ecosystems.