Barking is frequently used as a stimulus in medical and psychological research:

Barking is a versatile acoustic signal used by dogs to express a wide range of emotions and needs. : It can signal joy, fear, anger, or excitement. Szczekanie psa

: The meaning is often conveyed through changes in tone, frequency, and intensity. Barking is frequently used as a stimulus in

: Dogs bark to gain attention, request play, or warn of a perceived intruder. or warn of a perceived intruder.