my vet gave this to vet me , author unknown

IF IT BE I GROW OLD AND WEAK
AND PAIN SHOULD WAKE ME FROM MY SLEEP
THEN YOU MUST DO WHAT MUST BE DONE
FOR THIS BATTLE CAN'T BE WON.

YOU WILL BE SAD, i'LL 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 WILL HOLD NO FEARS
YOU'LL 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 ME,
ALTHOUGH MY TAIL IT'S LAST HAS WAVED
FROM PAIN AND SUFFERING, i'VE BEEN SAVED

DO NOT GRIEF THAT IT SHOULD BE YOU
WHO HAS TO DECICIDE THEIS THING TO SO
WE'VE BEEN SO CLOSE, WE TOQ, THESE YEARS,
DON'T LET YOU'RE HEART HOLD ANY TEARS