You adore your dog, and the feeling seems to be mutual. They wag their tails when you walk in the door. Wait—tail-wagging can also be a sign of stress. Come to think of it, does your dog love you, or ...

With more than 6.5 million square miles of land, Russia is the largest country in the world. This country is also home to a diverse group of beautiful dog breeds that are known for their toughness.