When someone is crying, if the first tear come from the right eye, it means that the person is happy. If it comes from the left eye, we will talk about pain. If the too first tears come from the too eyes, it means that it's frustration.
Kitty Speak - this is interesting. some people believe that because cats have different "tail" language than dogs this is the reason for their feuding. But when a dog is raised as a young pup with cats, he learns cat "tail language".