Speech therapist Christina Hanger from the USA taught her dog Stella to communicate using word buttons. This is reported by Esquire.
Stella has learned 29 words in 16 months. Her owner Christina made a special board on which each button corresponds to a specific word. When the dog presses a button, an audio file with that word plays. Among the words are «ball», «eat», «play», «outside».
To train Stella, Christina used speech therapy programmes for young children, as well as special apps with sets of words that correspond to pictures.
The first word Stella learned was «outside». Each time her owner was about to take the dog for a walk, she pressed a special button. Over time, the dog understood that it could also call its owners for a walk by pressing this button.
According to research, the average dog understands about 165 words. Some dogs can understand 250 words and gestures. Scientists have found that in terms of cognitive and linguistic abilities, dogs are at the level of 2-year-old children.