“What dog can tell the time?”/“A watch dog.”

A dog riddle is:
 
Q: What dog can tell time?
A: A watch dog.
 
The riddle has been cited in print since at least 1962.
 
         
30 June 1962, The Evening Republican (Columbus, IN), “Tom Trick” by Dale, pg. 2, col. 2:
WHAT KIND OF DOG CAN TELL TIME?
A WATCH DOG
     
18 June 1968, San Diego (CA) Union, “Fun Time—The Riddle Box” by A. Leokum, pg. A-10, col. 2:
What dog tells time?
A Watch dog.
 
2 September 1969, Austin (TX) Statesman, “Fun Time—The Riddle Box” by A. Leokum, pg. 24, col. 5:
What kind of dog tells time?
A watch dog.
 
20 January 1974, Sunday Herald Advertise (Boston, MA), comic sec., pg. ?, col. 1:
From ROBERT SAMALIS of Summerville:
What kind of dog can tell time?
 
30 August 1983, Morning Advocate (Baton Rouge, LA), “A Little Bit of Humor, The Bubble Gum Rapper, pg. 1, col. 2:
Jane: What kind of dog can tell time?
Karen: A watchdog!
   
30 April 1985, Philadelphia (PA) Daily News, “Sharla Feldscher’s Kidfun,” pg. 48:
What kind of dog can tell time?
A watch dog!- Jeffery Reis
 
Google Books
Amish Roots:
A Treasury of History, Wisdom, and Lore
Edited by John Andrew Hostetler
Baltimore, MD : Johns Hopkins University Press
1989
Pg. 222:
What kind of dog can tell time? A watchdog.
 
Google BOoks
Pet Humor!
By Oliver Gaspirtz
Westhoff Publishing
2014
Pg. 30:
Q: What kind of dog tells time?
A: A watch dog.
   
Google Books
Jokes For Kids:
300 Funny Trick Questions For Kids
By Jim Hogan
Pronoun
2017
Pg. ?:
Q: What kind of dog tells time?
A: A watch dog.
     
Google Books
LOL: A Load of Laughs and Jokes for Kids
By Craig Yoe
New York, NY: Little Simon
2017
Pg. 19:
Q: What kind of dog can tell time?
A: A watch dog!
 
Twitter
Lucky Score
@LuckyScoreNet
What dog can tell the time ?
A watch dog !
#Joke from #Timejokes in #Jokes,  #Humor and #Satire
1:43 PM - 27 Jun 2017