I read this in Front and Finish (a dog training newspaper). 
It was credited to The Fitzsimons Army Medical Center in Colorado. 
Now I want to share these thoughtful words with you. 

Pam

1. My life is likely to last 10-15 years.  Any separation from you will be painful for me.  Remember that before you get me.
2. Give me time to understand what you want from me.
3. Place your trust in me.
4. Don’t be angry with me for long, and don’t lock me up as punishment. You have your work, entertainment and friends.  I only have you.
5. Talk to me sometimes.  Even if I don’t understand your words, I  understand your voice.
6. Be aware that however you treat me, I’ll never forget it.
7. Please don’t hit me.  I can’t hit back, but I can bite and scratch and I really don’t want to do that.
8. Before you scold me for being uncooperative, obstinate, or lazy, ask yourself if something might be bothering me.  Perhaps I’m not getting the right foods or I’ve been out in the sun too long or my heart is getting old and weak.
9. Take care of me when I get old.  You too will grow old.
10. Go with me on difficult journeys.  Never say “I can’t bear to watch” or “Let it happen in my absence”.  Everything is easier for me if you are there.  Remember, I love you.
    

Pam Young, LVT CDBC CPDT  
Dog Gone Good LLC
Dog Behavior Consultant
Personal Dog Trainer