Dogs’ Brains Process Speech Like Humans, New Study Finds

A recent study conducted by researchers at Hungary's Eotvos Lorand University has revealed that dogs' brains process certain patterns in human speech in a manner strikingly similar to human brains. Scientists found that dogs exhibit a preference for consonants when identifying individual words within a continuous stream of speech, a phenomenon known as consonant bias.

This preference, which had previously been attributed only to human linguistic abilities, was observed in 20 dogs and 20 humans during a comparative study. Using electroencephalograms (EEGs) to measure brain activity, researchers discovered that both species produced stronger brain signals when exposed to consonant patterns, even when the sequences lacked any pauses to indicate word boundaries.

This distinctive brain response appeared approximately 400 milliseconds after the onset of each word, mirroring the timing at which human brains typically segment continuous speech into distinct, recognizable word units. The study's findings, published in Science, provide the first evidence that consonant bias can emerge in the brain of a nonhuman species and suggest that dogs may develop this processing strategy through repeated exposure to speech, rather than through a uniquely human language-processing mechanism.

While the discovery does not imply that dogs understand language in the same way humans do, it highlights an intriguing similarity in how the two species process spoken sounds.