How about we all share some of our favourites...

The best thing about a man, is his dog. -French Proverb

The one absolutely unselfish friend that man can have in this selfish world, the one that never deserts him, the one that never proves ungrateful or trecherous, is his dog. -George Graham Vest

The more I see of men, the better I like dogs. -attributed to Madame Roland

The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind. -Theodorus Gaza

The first to welcome, foremost to defend. -George Noel Gordon, Lord Byron

He will kiss the hand that has no food to offer; he will lick the wounds and sores that come in encounters with roughness of the world...When all other friends desert, he remains. -George G. Vest

He is your friend, your partner, your defender, your dog.
You are his life, his love, his leader. He will be yours, faithful and true.
To the last beat of his heart. You owe to him to be worthy os such devotion. -Anonymous

Now lets hear yours! I have many long ones, maybe I will share those later on!