Everyone also knows what panting looks like, but many don't realize that it can be a sign of high level stress, especially if it's accompanied by drooling. Of course, dogs pant to cool off, too. To determine if panting is a sign of stress, look at the rest of the body language the dog is exhibiting.

All dogs have the potential to bite. This fact is important to remember, especially because we commonly hear people say things that imply otherwise.

Dogs and humans have very different ideas of what constitutes a "polite" greeting, so people often greet dogs improperly without even realizing it.