Poor old Rover,
Your hunting days are over,
You can hardly get around
You poor old hound,
You followed me so faithfully,
Poor old Rover
Come on let's get it over,
There's a spot on the hill
That is peaceful and still,
Where we will place a slab of stone,
Up the hill we gotta go,
But old Rover doesn't know
That I will be coming back all alone,
Poor old Rover,
[Something, something]
Have dug a hole that's deep
For your last long sleep,
Rest peacefully, old Rover.

That's all I can remember. There is a little missing at the end. I could have the words "come on let's get it over" in the wrong place.

Hope this helps, Burlingtonb