S ome people can't hide their emotions; you can tell exactly how they feel just by looking at their face. The same goes for ...

Cats mostly meow to humans — in greeting, to get attention, and of course, when they want food. The length and volume of the meow, and your cat's body language, can offer clues about their mood.

There's a scientific reason for the feline reaction: Catnip contains the oil nepetalactone, which binds to the cat's ...