From chickens to humans, animals think "bouba" sounds round

Does "bouba" sound round to you? How about "maluma"? Neither are real words, but we've known for decades that people who hear them tend to associate them with round objects. There have been plenty of ideas put forward about why that would be the case, and most of them have turned out to be wrong. Now, in perhaps the weirdest bit of evidence to date, researchers have found that even newly hatched chickens seem to associate "bouba" with round shapes.

The initial finding dates all the way back to 1947...