“What did the dog get when he graduated from school?”/“A pedigree.”

A dog riddle is:
 
Q: What did the dog get when he graduated from school?
A: A pedigree.
 
The joke was posted on the newsgroup alt.humor.puns on November 16, 2004. The portmanteau word “pedegree” (pedigree + degree) was used on Reddit—Dad Jokes on June 8, 2018.
             
 
Google Groups: alt.humor.puns
Kids Puns of the Weak 11-16-04
Stan Kegel
11/16/04
(...)
What did the dog get when he graduated from school?
A pedigree! (Nasrin, 12)
 
1 January 2006, Sunday Herald-Sun (Melbourne, Victoria), pg. F6:
Q: What did the dog get when he graduated from school?
A: A pedigree.
- Jamie, 12, Mentone
(Joke of the week)
     
Christian Forums
dog light bulb jokes
Utah Knight
Feb 23, 2006
(...)
Q: What did the dog get when he graduated from school?
[FONT=arial,helvetica,sans-serif]A: A pedigree![/FONT]
 
Twitter
Beauty In Your Eyes
@ChristineB_96
3. What did the dog get when he graduated from school? ... a pedigree haha
9:01 AM - 2 Sep 2010
   
Twitter
Daily Groaner
@DailyGroaner
Q: What did the dog get when he graduated from #school? A: A pedigree. #jokes #humor #funny
1:37 PM - 18 Nov 2010
 
Twitter
Thing 2
@TinaRibena_
#LameJokes What did the dog get when he graduated? A pedigree.
6:19 PM - 26 May 2013
 
Twitter
sasha.
@_sashaxovo
No just no. “@IcrazziiTrick: - JOKE!!!! What degree did the dog leave college with?……………………………… A pedigree!!! Lmao get it? *slaps knee* :’)”
1:07 AM - 10 Jun 2013
 
Reddit—Dad Jokes
What did the dog achieve at university? (self.dadjokes)
submitted June 8, 2018 by RhodiumTheGreat
A pedegree.