How about 'Jennifer's Rabbit' by Tom Paxton.

It's only got 6 verses but the words are absolutely magical. I've found the words in the DT, sorry, can't link yet, try taking a look.

The first verse goes:

Jennifer's rabbit, brown & white, Left the house & ran away one night, Along with a turtle & a kangaroo, And twenty-four monkeys from the city zoo, And Jennifer too.

I've always wondered if anyone would illustrate it, maybe now's the time!