The document discusses several key concepts about animal behavior including: 1. Behavior allows organisms to respond adaptively to their environment through behaviors triggered by internal and external stimuli. 2. Behaviors can be innate or learned, with many having both innate and learned components. Learned behaviors include habituation, imprinting, imitation, and classical and operant conditioning. 3. All behaviors have costs and benefits, and natural selection favors behaviors whose benefits outweigh their costs, allowing animals to better adapt to their environment.

1. KEY CONCEPT Behavior lets organisms respond rapidly and adaptively to their environment.

10. KEY CONCEPT Both genes and environment affect an animal’s behavior.

18. KEY CONCEPT Every behavior has costs and benefits.

23. KEY CONCEPT Social behaviors enhance the benefits of living in a group.

30. KEY CONCEPT Some animals other than humans exhibit behaviors requiring complex cognitive abilities.