If it should be that I grow frail and weak 
And pain should keep me from my sleep, 
Then will you do what must be done, 
for this--the last battle--can't be won. 

You will be sad I understand, 
But don't let grief then stay your hand, 
For on this day, more than the rest, 
Your love and friendship must stand the test. 

We have had so many happy years, 
You wouldn't want me to suffer so. 
when the time comes, please, let me go. 

Take me to where my needs they'll tend, 
Only, stay with me till the end 
And hold me firm and speak to me 
Until my eyes no longer see. 

I know in time you will agree 
It is a kindness you do to me. 
Although my tail its last has waved, 
From pain and suffering I have been saved. 

Don't grieve that it must be you 
Who has to decide this thing to do; 
We've been so close--we two--these years, 

Don't let your heart hold any tears. 

Just this side of heaven is a place called Rainbow Bridge.  When an animal dies that has been especially close to someone here, that pet goes to Rainbow Bridge.  There are meadows and hills for all of our special friends so they can run and play together.  There is plenty of food, water and sunshine, and our friends are warm and comfortable. 

All the animlas who have been ill and old are restored to health and vigor; those who were hurt or maimed are made whole and strong again, just as we remember them in our dreams of days and times gone by.  The animals are happy and content, except for one small thing; they each miss someone very special to them, who had to be left behind.  They all run and play together, but the day comes when one suddenly stops and looks into the distance.  His bright eyes are intent; his eager body begins to quiver.  Suddenly he begins to run from the group, flying over the green grass, his legs carrying him faster and faster.  You have been spotted, and when you and your special friend finally meet, you cling together in joyous reunion, never to be parted again.  The happy kisses  upon your face; your hands again caress the beloved head, and you look once more never absent from your heart. 

Then you cross Rainbow Bridge together ...