Found in a years-old forward I got once:

If a dog was your teacher, you would learn stuff like:

When loved ones come home, always run to greet them.

When it's in your best interest, practice obedience.

Let others know when they've invaded your territory.

Take naps.

Stretch before rising.

Run, romp, and play daily.

Thrive on attention and let people touch you.

Avoid biting when a simple growl will do.

On warm days, stop to lie on your back on the grass.

On hot days, drink lots of water and lie under a shady tree.
When you're happy, dance around and wag your entire body.

Allow the experience of fresh air and the wind in your face to be pure ecstasy.

No matter how often you're scolded, don't buy into the guilt thing and pout..! run right back and make friends.

Delight in the simple joy of a long walk.

Eat with gusto and enthusiasm. Stop when you have had enough.

Be loyal. Never pretend to be something you're not.

If what you want lies buried, dig until you find it.

When someone is having a bad day, be silent, sit close by and nuzzle them gently.