“Why do beavers spend a fortune on the internet?”/“They never want to log off.”

A beaver riddle is:
 
Q: Why do beavers spend a fortune on the internet?
A: They never want to log off.
 
The joke has been cited in print since at least 2004.
 
       
Google Books
Super Goofy Jokes
By Jacqueline Horsfall
New York, NY: Sterling Publishing Company, Inc.
2004
Pg. 81:
Why do beavers spend so much time on the Internet?
They never want to log off.
 
Twitter
Joe Miechowicz
@JoeMiechowicz
why do beavers spend a fortune on the internet ?  coz they never wanna log off !! lol 😛
1:48 AM - 7 May 2009
 
Twitter
Bollywood Sargam
@bollywoodsargam
Internet jokes - 6132 Joke: Why do beavers spend a fortune on the Internet? They never want to log off. .... http://bit.ly/iqUs2
2:53 PM - 21 Jul 2009
   
Twitter
Sang Valades
@MrSangVal
Why do beavers spend a fortune on the Internet?They never want to log off.
9:37 AM - 4 Dec 2009
     
Google Books
Sensible Nonsense.. Frank’s Comic Pack:
Humour Pack Series
By Frank Paul
BookBaby
2014
Pg. ?:
Why do beavers spend a fortune on the Internet?They never want to log off.
 
Twitter
Lucky Score
@LuckyScoreNet
Why do beavers spend a
fortune on the
Internet?
They never want to log off.
#Joke from #InternetJokes in #Jokes, #Humor and #Satire
6:09 PM - 14 Apr 2018