In 1986, the residents of Chernobyl were forced to flee their homes when the town’s nuclear power plant turned into a disaster zone. The area of Ukraine has been without a permanent human population ever since, but that doesn’t mean it’s empty.

Some dogs love going for a car ride. Simply saying “Want to go for a car ride?” can leave some dogs in a tizzy with full-bodied wags while they anxiously wait at the front door. But for other dogs, car rides are the opposite of fun and are nothing more than anxiety filled.

Three in five Americans currently have a pet, and almost all pet owners (95 percent) consider their pets to be members of the family. As such, many pets are getting the royal treatment.

For better or worse, hoarding has gotten a lot of attention in recent years due to the popularity of several TV shows, including “Hoarders” and “Hoarding: Buried Alive.”

The scientific interest in studying canine cognition has led to the development of a slew of test protocols—some uniquely designed for dogs and others modified from the field of comparative psychology.