Mammals prefer to cradle babies on the left, study demonstrates

Left-hand bias for human mothers is well-known, but new research shows it is more widespread among mammals than thought, suggesting an ancient origin

There is more to cradling an infant than meets the eye, according to new research revealing that, like humans, other mammal mothers and babies prefer to keep each other on the left when face-to-face.

A new study shows the phenomenon is also seen in Pacific walruses and Indian flying foxes, suggesting it is more widespread than previously thought.