I recall some bits along the lines:
(as a recitation, different people taking different 'verses')

Ladies and Gentleman, over here we have
The spotted leopard

This big cat has 365 spots
One for every day of the year.
What about leap years you ask?
George, lift his tail.

Now we have the Laughing hyena
This creature drinks ones a day
eats once a week and never f**ks
What he's got to laugh about, Gawd knows

Now we have the camel,
This curious creature eats mud
Shits bricks
And has a triangular arsehole
Hence the Pyramids

Here we have the Wild Man of Borneo
This poor fellow has no cock
"How does he F**k Guv'ner"?
"He can't, that's why he's so wild.

The 'end of the show' was usually signalled by the group 'Leader'
(or some member, having got bored by the whole performance) announcing

"And now will all you small childre please get into the boat, the Elephant is about to piss".

Walrus