Here is the version the Dubliners sing.
HTH
MudGuard

The Zoological Gardens

Thunder and lightning is no lark
When Dublin City is in the dark.
So if you have any money go up to the park
And view the zoological gardens.

We went up there to see the zoo,
We saw the lion and the kangaroo.
There was he-males and she-males of every hue
Up in the zoological gardens.

We went out there by Castleknock
Says she to me, "shall we court on the lough?"
Then I knew she was one of the rare old stock
From outside the zoological gardens

We went up there on our honeymoon,
Says she to me, "if you don't come soon
I have to get in with the hairy baboons"
Up in the zoological gardens.

Says she to me, "it is seven o'clock
And time for me to be changing my frock
For I love to see the old cockatoo"
Up in the zoological gardens.

Says she to me, "My lovely Jack,
Sure I'd love a ride on the elephants back."
"If you don't get out of that I'll give you such a crack"
Up in the zoological gardens.