“What do you get when you cross a police dog with a skunk?”/“Law & odor.”

A “law and order” pun is:
 
Q: What do you get when you cross a police dog with a skunk?
A: Law & odor.
 
The joke has been cited in print since at least 1996.
 
       
12 January 1996, The News Journal (Wilmington, DE), “Just for Laughs,” pg. HR11, col. 5:
Q. What do you get when you cross a police dog with a skunk?
A. Law and odor.
Mikey Prettyman, 7
Bear
 
26 December 2000, Los Angeles (CA) Times, “The Kids’ Reading Room; Jokes & Riddles,” pg. E7:
What do you get if you cross a police dog and a skunk? Law and odor. (Jesus, 9, Chavez Elementary, Norwalk)
   
Twitter
nurse walter voncatmom ♡
@_sarahann
@CTVJoelle what do you get when you cross a police dog with a skunk?
Law and odor.
11:47 AM - 16 Aug 2017
       
Kathleen S. Evenhouse
MAY 4, 2018 BY KATHLEEN EVENHOUSE
Live Life Laughing
(...)
Q.  What do you get when you cross a police dog with a skunk?
A.  Law and Odor
 
Twitter
Donnie Parrett
@Donnie1261
Q.  What do you get when you cross a police dog with a skunk?
A.  Law and odor.
10:38 PM - 6 May 2018
 
Twitter
lorraine Jo King
@LahLahBean
#jokes
What do you get when you cross a police dog with a skunk?
Law & odor
4:05 PM - 30 Jul 2018