The basic method for imaging functional states of the brain involves recordings of electrical activity, i.e., electroencephalograpy (EEG). The majority of studies of EEG recordings in animals have been performed with the use of pharmacological agents that restrict animals’ mobility. Assessment of electrical brain activity can provide assessments of behavior, including social and utility-related behavior, under a number of welfare conditions. Our studies were conducted on 2 female dogs - one trained and one untrained dog. The recordings of the EEG signal were made at full consciousness and with the animalsin an unrestrained, static position. EEG readings were recorded during a voice-command and under complete-silence. Analysis of the EEG signal frequency in the case of the untrained dog showed maximum amplitude at 17 Hz (beta 1-beta 2 range), which suggested increased brain activity in response to voice commands. Response of trained female to the sound stimulus was manifested by the dominant components in the beta 3 range (20 Hz-28 Hz) and there were no periods of dominant alpha rhythm in that measurement. The dog was calm but waited for the commands attentively and actively. However, in the untrained dog during periods of relaxation and rest associated with the presence of a guardian, frequencies close to the alpha rhythm were noted (8 Hz-14 Hz).