Most parents have experienced frustration when their infants cry excessively and refuse to sleep. Scientists have found that the best strategy to calm them down is by holding and walking with them for ...

A howler monkey infant, only a few days old, clings to a subadult white-faced capuchin monkey as it uses tools. Brendan Barrett / Max Planck Institute of Animal Behavior In June 2022, while watching ...

It’s hard to imagine a more common stressor for new parents than the recurring riddle: Why is the baby crying? Did she just rub her eyes—tired? Is he licking his lips—hungry? The list of possible ...

Newborn humpback whales can measure more than 15 feet from nose to tail fluke and weigh as much as full-grown giraffes. But these hefty calves still need to pack on the pounds quickly to reach their ...