https://www.yahoo.com/celebrity/stop...171817005.html
While we stop using the baby voice on humans after they've grown out of their diapers, many of us keep on using it no matter how old our dogs get. However, according to a new study, we should really stop once our dogs grow out of puppyhood. Gizmodo reports that in a study that's been accepted for publication in the Proceedings of the Royal Society B, puppies respond to baby talk, but full-grown dogs are apathetic to your cooing.