What is the definition of animal behavior?

The definition of animal behavior encompasses the study of how animals interact with each other and their environment, which includes a wide range of activities, such as mating, foraging, social interactions, and responses to stimuli. This definition captures the complexities of animal actions and the influences that various internal and external factors can have on those actions. Understanding animal behavior helps researchers and practitioners observe and interpret behavioral patterns and adaptations within different species in their natural settings or controlled environments.

The other options, while related to animal interactions and experiences, focus on specific aspects rather than providing a comprehensive definition of animal behavior. For instance, training methods, responses to human presence, and physical classification do not encompass the full range of interactions and patterns studied in animal behavior.