Be kind to your web-footed friends,
For a duck may be somebody's mother:
Be kind to your friends in the swamp.
Where it's very very wet and very damp

Be kind to the lions in the zoo
For a [something] may be jumping on [can't remember the rest of this verse]

You may think that this is the end
Well it is!
(Long pause)
But it could go on forever [and I don't remember the rest of this verse either]