People are born so that they can learn how to live a good life like loving everybody all the time and being nice, right?

Well, dogs already know how to do that, so they dont have to stay for as long as we do.

Live simply.
Love generously.
Care deeply.
Speak kindly.

Remember, if a dog was the teacher you would learn things like:

When your loved ones come home, always run to greet them.
Never pass up the opportunity to go for a joyride.
Allow the experience of fresh air and the wind in your face to be pure Ecstasy.
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 youre happy, dance around and wag your entire body.
Delight in the simple joy of a long walk.
Be faithful.
Never pretend to be something youre 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.

That's the secret of happiness that we can learn from a good dog.