Hungarian researchers at ELTE's Department of Ethology used fMRI to watch family dogs' brains while they heard familiar action commands and meaningless nonwords. The result, published in NeuroImage in August 2025, was striking.
Action words ("come," "go," "stay," "lie") triggered stronger activity than nonwords not only in auditory regions but in movement-control areas. Words with similar meanings — like "come" and "go," both about locomotion — were processed more alike than "stay" and "lie."
That meaning-based clustering resembles the semantic networks in the human brain. Crucially, the dogs did not perform the commands and had no behavioral context — yet motor areas lit up at the words alone.
The authors suggest living in a language-rich human environment may have shaped dogs' brains to link words to mental representations of their meanings, much as we do — a rare glimpse of cross-species language cognition.
