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

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

We've had so many happy years What is to come can hold
no fears  You'd not want me to suffer, so  --  When the time
comes, please let me  go.

I know in time you too will see It is a kindness you do for me
Although my tail its last has waved  From pain and suffering
I've  been saved.

Don't grieve that it should 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.

Author unknown