Further to the version I posted back in December '03, and adjusting it slightly (memory was NOT perfect) the following is how it appears in "The Scout Song Book" published by "The Boy Scouts Association" 25 Buckingham Palace Road London S.W.1 (second edition published 1954)
The Animal Fair
I went to the Animal Fair
The birds and the beasts were there,
The gay baboon by the light of the moon
Was combing his auburn hair;
The monkey fell out of his bunk
Slid down the elephant's trunk,
The Elephant sneezed and fell on his knees,
And that was the end of the monkey monkey monkey,
Monkey, monkey, monkey, monkey ...
                                          Scout traditional

Complete with stave notation for the melody line (C Maj in 6/8 time)