"What is small, furry and smells like…

A “hamster” sounds like a pet made out of ham. A riddle is:

Q: What is small, furry, and smells like bacon?
A: A ham-ster.

The joke has been cited in print since at least 2005.

Google Books
Sit! Stay! Laugh!:
A Book of Pet Jokes
By Michael Dahl
Minneapolis, MN: Picture Window Books
2005
Pg. 21:
What is small, furry, and smells like bacon?
A ham-ster.

Google Books
The Everything Kids’ Gross Jokes Book:
Side-splitting Jokes That Make Your Skin Crawl!
By Aileen Weintraub
Avon, MA: Adams Media
2005
Pg. ?:
What is small, furry, and smells like bacon?
A hamster.

Twitter
Bollywood Sargam‏
@bollywoodsargam
A hamster! Joke: |What is small, furry and smells like bacon?A hamster! .... http://bit.ly/gvB5X
12:47 AM - 23 Aug 2009

Google Books
The Mammoth Book of Really Silly Jokes:
Humour for the whole family
Edited by Geoff Tibballs
London, UK: Constable & Robinson Ltd
2011
Pg. ?:
What is small, furry, and smells like bacon?
A hamster.

Google Books
Sensible Nonsense.. Frank’s Comic Pack:
Humour Pack Series
By Frank Paul
BookBaby
2014
Pg. ?:
“What is small, furry and smells like bacon ? A hamster !”

Twitter
Lucky Score‏
@LuckyScoreNet
What is small, furry and smells like bacon?
A
hamster.
#Joke from #FoodJokes in #Jokes, #Humor and #Satire
9:20 PM - 2 Oct 2017

“What is small, furry and smells like bacon?”/“A hamster.”