A new study reveals that dogs discern vocabulary and intonation in human speech using brain regions similar to ours. Just as humans rely on both elements to understand language, researchers investigated whether dogs do the same. They played recordings of dogs' trainers speaking words with varied intonation—praising or neutral—to test comprehension.
Using MRI scans, the team analyzed brain activity in response to these combinations. Results showed dogs process vocabulary independently of intonation, recognizing words distinctly in the left hemisphere, much like humans.
Dogs also handle intonation separately in right-hemisphere auditory areas, akin to people. Crucially, they integrate word meaning and tone to evaluate an utterance's reward value, demonstrating a deep understanding of human speech.
