I was never a fan of Donny Osmond, but it surprising that with just a little tweeking the words of his 'Puppy Love' could be appropriate. As below:

"Puppy Love"

And they called it puppy love
Oh we guess they'll never know
How young hearts really feel
And why we loved him so

And they called it puppy love
Just because we're in our teens
Tell them all oh please tell it isn't fair
To take away our canine friend

We cry each night these tears for him
Our tears are all in vain
We hope and pray that maybe some day
There will be such a dog in our life once again

Someone help us, help us please
Is the answer up above
How can we oh how can we tell them
This was sincere puppy love

I think you are very brave to share your grief and goodbyes with this group of youngsters. It will almost certainly teach them a very valuable life lesson and aid them in the process of grief and loss. Have you thought that you might do something positive like planting a tree in his memory as part of the ceremony - I'm sure all his doggie friends would appreciate it.

Polly