“What is a bear’s favorite drink?”/“Koka-Koala.”

The animal name “koala” sounds a bit like “cola.” A popular children’s riddle about the soft drink Coca-Cola is:
 
Q: What is a bear’s favorite drink?
A: Koka-Koala.”
 
“It’s (the word “koala”—ed.) an aboriginal word meaning “no drink”—and no cracks, please, about how you’ll have another koka koala” was printed in 1973 newspapers. “What’s a bear’s favorite drink? Koka-Koala” was cited in a 2000 newspaper.
 
“What is a frog’s favorite drink?”/“Croak-a-cola” is a similar riddle.
         
 
17 June 1973, Sunday Herald-Leader (Lexington, KY), “Animail” by Cleveland Amory, pg. 21, col. 1:
Q. What is the correct pronunciation of koala?
(...)
A. Whoala. Well, here goes. It’s pronounced co-ALLA. It’s an aboriginal word meaning “no drink”—and no cracks, please, about how you’ll have another koka koala.
   
19 January 2000, Rocky Mountain News (Denver, CO), “Spotlite,” pg. 2D:
What’s a bear’s favorite drink? Koka-Koala.
 
Google Groups: alt.happy.valley
For BIFFO
Anita Carter
1/12/02
(...)
What is a bear’s favourite drink ?
Koka-Koala !
 
Google Books
Noah’s Favorite Animal Jokes
Compiled by Barbour Staff
Urichsville, OH: Barbour Publishing, Inc.
2003
Pg. ?:
What’s a bear’s favorite drink?
Koka-koala.
     
Twitter
Bollywood Sargam‏
@bollywoodsargam
Various animal jokes - 9270 Joke: What is a bear’s favourite drink ? Koka-Koala ! .... http://tinyurl.com/pup67y
6:16 PM - 5 Jul 2009
 
Twitter
❤️ FizzyDuck ❤️‏
@FizzyDuck
What is a bear’s favourite drink? Koka-Koala! #fizzyarchive
2:03 PM - 22 Jul 2009
 
Twitter
sasha purse‏
@sashapurse
@rxtmr kid1: what’s a bear’s favorite drink? kid2: what? kid1: koka-koala!!
7:03 PM - 4 Oct 2009
 
Google Books
New Jokes 4 Kids
Joke Book
By Paul Gwilliam
Lulu Publishing (Lulu.com)
2013
Pg. ?:
What is a bear’s favourite drink?
Koka-Koala.
 
Google Books
Cute Bear Jokes For Kids
By Peter Crumpton
PeteyRF Creative
2015
Pg. ?:
What is a bear’s favorite drink?
Koka-koala!