“What do you call a frozen dog?”/“A pupsicle.”

A dog riddle is:
 
Q: What do you call a frozen dog?
A: A pupsicle.

 
Forms of the “pupsicle” (pup + popsicle) riddle have been cited in print since at least 1965.
 
         
7 July 1965, Honolulu (HI) Star-Bulletin, “Try and Stop Me” by Bennett Cerf, pg. 11, col. 6:
Q. What’s a small dog suffering from chills?
A. A pupsicle.
     
Google Books
Computers and Small Fries:
A Computer-Readiness Guide for Parents of Tots, Toddlers, and Other Minors

By Mario Pagnoni
Wayne, NJ: Avery Publishing Group
1987
Pg. 94:
One of her favorite jokes is, “What do you call a frozen dog?” Answer — “a pupsicle.”
 
13 November 1994, Newsday (Long Island, NY), “Smiles,” Kidsday sec.:
What do you call a frozen little dog? A pupsicle.
Meredith Williams, Hempstead
   
Google Books
Jay Leno’s How to Be the Funniest Kid in the Whole Wide World (or Just in Your Class)
By Jay Leno
New York, NY: Aladdin Paperbacks
2007
Pg. 2:
What happened to the dog who fell in the freezer?
He became a frozen pupsicle.
 
Twitter
Awesome Adam‏
@atothedam125
What do you call a frozen dog? A pupsicle!!! LOL
6:16 PM - 6 Jun 2011
 
Twitter
Lauren Poertner‏
@LaurenPoertner
what do you call a frozen dog? a #pupsicle
10:58 PM - 24 Oct 2011
 
Reddit—Jokes
What do you call a frozen dog…
submitted December 14, 2017 by Iderples
... a pupsicle.