Why do pigs like to play in mud? -- Trevor J. Thompson, 7, Washington "As happy as a pig in mud" is a phrase some people use to express how much fun someone is having. For instance, at this very ...

Humans and pigs aren’t so different; we all like to roll around in the mud once in a while, and we all like to relax with a good game. In the spirit of European laws that require farmers to provide ...

Pigs are one of many animals that wallow in the mud, using the roll in filthy water to keep cool in the absence of sweat glands. And that particular arrangement might be just how ancient pigs liked it ...