From time to time, people tell me, "lighten up, it's just a dog," or,      "that's a lot of money for just a dog." They don't understand the distance      traveled, the time spent, or the costs involved for "just a dog."
Some of my proudest moments have come about with "just a dog." Many hours      have passed and my only company was "just a dog," but I did not once feel      slighted.
Some of my saddest moments have been brought about by "just a dog," and in      those days of darkness, the gentle touch of "just a dog" gave me comfort and      reason to overcome the day.
If you, too, think it's "just a dog," then you will probably understand      phases like "just a friend," "just a sunrise," or "just a promise." "Just a      dog" brings into my life the very essence of friendship, trust, and pure      unbridled joy. "Just a dog" brings out the compassion and patience that make      me a better person.
Because of "just a dog" I will rise early, take long walks and look      longingly to the future. So for me and folks like me, it's not "just a dog"      but an embodiment of all the hopes and dreams of the future, the fond      memories of the past, and the pure joy of the moment.
"Just a dog" brings out what's good in me and diverts my thoughts away from      myself and the worries of the day.   
I hope that someday they can understand that it's not "just a dog" but the      thing that gives me humanity and keeps me from being "just a human."
So the next time you hear the phrase "just a dog." just smile, because they      "just don't understand."