When a usually easygoing dog starts snarling or stiffening up around unfamiliar people, it can feel completely out of the blue. But dogs don’t wake up with new personalities. Something in their ...

It's common for babies to cling to their parents tightly when a distant aunt tries to pick them up, or for them to suddenly hide behind their parents' legs when a neighbour says hello. This behaviour ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." This story contains spoilers for Stranger Things season 5, episode 4. If you’re looking for our recap of ...