"It is a unique ability that we have as humans, which no other animal shares."

Dogs at least can learn that, too. Probably also cats. Using buttons to express themselves has proven that. Hell, even our dog, who never figured out the buttons, understood that "bed" meant "soft thing next to human's bed", not "the particular bed I usually sleep in".

Humans are merely a lot better at communicating this, having a more complex speech apparatus.