If you aren't familiar with dog body language, the following should be an excellent starting point in better understanding what your dog is trying to tell you. It goes over very BASIC dog body language and gives a brief overview of what it means when your dog does a certain behavior.
If you can take some nuggets out and apply them to your life in better understanding your dog, you will have a more fulfilled relationship with your four legged pal, guaranteed! Let's dive in!