Tears are unique to humans, but distress calls are common among most other mammal and bird young, often when separated from their mothers. Crying extends far beyond infancy. A University of Pittsburgh ...

Rachel has experience creating content on a number of niche concepts. Her writer skillset lies in pop culture and animation, with a degree in the latter. As a ranked competitive gamer, she's ...

Tears are unique to humans, but human infants share distress calls with most other mammal and bird young, often when separated from their mothers. Crying extends far beyond infancy. A University of ...