An animal riddle is:

Q: What is 3/7 chicken, 2/3 cat and 2/4 goat?
A: Chicago.

The listener probably expects some sort of animal (or a culinary dish like “turducken"). The city name of “Chicago” is 3/7 “chicken” ("Chic"), 2/3 “cat” ("ca") and 2/4 “goat” ("go").

The riddle has been cited in print since at least 1921. “What is three-sevenths of a chicken, two-thirds of a cat and one-half of a goat? Ans.—Chicago” was printed in The Gazette and Daily (York, PA) on May 20, 1921.


Newspapers.com
20 May 1921 The Gazette and Daily (York, PA), “Riddles Sent In By Members of Birthday Club,” pg. 9, col. 4:
Helen Jones, Pylesville, Md.
What is three-sevenths of a chicken, two-thirds of a cat and one-half of a goat? Ans.—Chicago.

Newspapers.com
9 May 1925, The Citizen (Ottawa, ON), “Riddles Keep Pouring In,” pg. 14, col. 2:
562. What city is made up of three-sevenths of a chicken, two-thirds of a cat and one-half of a goat?

Newspapers.com
7 August 1926, San Pedro (CA) Daily Pilot, “These Riddles Will Wake Up Drowsy Fans,” pg. 6, col. 1:
341. What city is made up of three-sevenths of a chicken, two-thirds of a cat, and one-half of a goat?—Mollie Rinaldo, Nashville, Tenn.
("Chicago" is the answer given in column 7.—ed.)

Twitter
Michelia Glamoura
@ThatsSoGlamiie
Ok so here it is: 3/7 chicken, 2/3 cat and 2/4 goat. Where am I?
9:21 AM · Jun 14, 2011·erased734497

Twitter
nahil
@Helloo_Moto
What’s 3/7 of CHICKEN, 2/3 CAT and 2/4 GOAT? .  .  .  Chicago. heheheheh. I so lame XD
9:29 AM · Oct 22, 2012·Twitter Web Client

Twitter
Bhagirath KC
@bhagirath_kc
What is 3/7 chicken,
2/3 Cat & 2/4 goat ?
3:02 AM · Jan 5, 2013·Facebook

Facebook
Authiur Krishnamurthy Rajagopalan
June 13, 2015 at 7:52 AM ·
IAS Question
Only 2 % could solve this Question
What is 3/7 chicken, 2/3 cat and 2/4 goat...?
Only genius can solve this Mindbender !!!!
lets us see whether you are Genius

Reddit—Riddles
Posted by u/JeanieJules April 11, 2017
Reddit, riddle me this: What is 3/7 chicken, 2/3 cat and 2/4 goat?

Reddit—Riddles
Posted by u/Snacky_Creamhorn August 4, 2018
What is 3/7 chicken, 2/3 cat, and 1/2 goat?

Reddit—Jokes
Posted by u/snowclaws September 19, 2019
What’s 3/7 chicken, 2/3 cat and 1/2 goat?
Chicago

Reddit—Jokes
Posted by u/conbeanaman October 25, 2019
What country has 3/7 of chicken 2/3 of cat and 2/4 of goat?
Chicago

Reddit—3amjokes
Posted by u/ASR9821 September 6, 2020
What is 3/7 chicken, 2/3 cat and 2/4 goat?
Chicago

Reddit—Dadjokes
Posted by u/VERBERD February 12, 2021
Whst is 3/7 chicken, 2/3 cat and 2/4 goat ?
Chicago.