Jerky treats for dogs and cats have been linked to pet illnesses and deaths. But it's still unclear what is causing the problems. iStockphoto.com hide caption

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If you need empirical information about what is happening in the brain of a dog to know that dogs think, then either you've never met a dog or your own humanity is in doubt. iStockphoto.com hide caption

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Xander, a pug mix, lost both his eyes in an accident. He now works as a therapy dog, and visits groups such as this class at a daycare center. Steven Silton/Herald and News hide caption

itoggle caption Steven Silton/Herald and News

A customer rolls a joint made of half marijuana and half tobacco in Olympia, Wash., on December 9, 2012. Nick Adams/Reuters/Landov hide caption

itoggle caption Nick Adams/Reuters/Landov