Dogs understand what humans are saying? They understand our languages in ways we don't understand, says new evidence

Your dog may not need to know what a word means to recognise a pattern in the way you speak to him or her. Even when sounds contain no familiar commands, the dog's brain may be able to identify word-like units. A new study has found that dogs, like humans, seem to rely on consonants to do this, which shows a surprising similarity in how the two species process speech.

Published in Science on September 24, 2026, the research raises a question, how did dogs develop a speech-processing ability previously seen only in human beings but not in other animals, including non-human primates.

Can dogs find words without pauses?

Researchers led by Boglárka Morvai and colleagues at Eötvös Loránd University in Hungary studied 20 dogs and 20 human adults. Using electroencephalography (EEG), which records electrical activity in the brain, they examined how both groups responded to recordings of invented, three-syllable words.


The recordings were continuous, with no break to mark the end of one word and the beginning of another. In one version, recurring consonants helped define the word patterns and in another, vowels provided the structure. A third recording scrambled the syllables, leaving no consistent pattern to identify.

The researchers measured whether brain activity synchronised with the rhythm of these patterns.

Dogs showed a stronger word-level response when consonants defined the patterns. When vowels provided the structure, their response was not much stronger than when the syllables were scrambled.

Why consonants matter more than vowels

The result is interesting because vowels generally carry more acoustic energy and sound more prominent than consonants. Yet the loudest or clearest sounds are not necessarily the most useful for identifying words.

Across many human languages, consonants carry important information that helps distinguish words. Humans therefore tend to rely more heavily on consonant patterns when dividing continuous speech into individual words and this habit is called consonant bias.

Until this study, researchers had demonstrated this preference in humans but not in other animal species.

The results show that dogs share one thing with humans in terms of processing speech, even when they don't speak languages.However, the experiment does not determine whether this ability evolved through domestication, or arose through exposure to human speech.

Do dogs understand words the way we do?

There were important differences between the two groups. Human brains tracked vowel-based patterns more effectively than the scrambled recording, suggesting that people could recognise these patterns too. Dogs did not show this same response.

The researchers also found that dogs' brain activity tracked syllable-level patterns more clearly than individual speech sounds, unlike the human responses observed in the experiment.

The study also looked at whether any effect on the results was due to early exposure to human speech. Consonant bias was shown by dogs who entered speech-rich homes before 12 weeks of age and dogs who entered later.However, the sample size was small and some dogs' early histories were not fully known.

So dogs understand what we’re saying?

Not necessarily, the recordings contained invented words without any assigned meanings, so the experiment only tested whether dogs could detect patterns, not whether they understood language.

Earlier research offers other clues; a 2016 study reported by The Guardian found that dogs process meaningful words and emotional intonation through different regions in their brain. Other research has suggested that some dogs with exceptional word-learning abilities can learn new words simply by listening to their owners' conversations.