“Do race horses slow down when they see police horses?”

Many drivers slow down when they see a police car. “Do race horses slow down when they see police horses?” is a jocular saying.
   
“Do race horses slow down when they see a police horse? #KentuckyDerby” was posted on Twitter by Kevin O’Neill on May 5, 2012. “DO RACE HORSES SLOW DOWN WHEN THEY SEE POLICE HORSES?” (shown on a sign) was posted on Facebook by Indian Hills Community Sign on May 4, 2023.
     
“Do regular dogs see police dogs and think ‘oh shit it’s the cops’?” is a similar animal saying.
   
         
Twitter
Kevin O’Neill (blue check)
@KevinBuffalo
Do race horses slow down when they see a police horse? #KentuckyDerby
12:42 PM · May 5, 2012
     
Twitter
Kevin O’Neill (blue check)
@KevinBuffalo
I wonder if race horses slow down when they see a police horse.
11:38 PM · Jun 22, 2013
 
Twitter
Kevin O’Neill (blue check)
@KevinBuffalo
Quick question @CalChrome: do race horses slow down when they see a police horse?
9:51 PM · Jun 5, 2014
   
Twitter
Ebenezer Stooge ☀️(Darles Chickens)
@Darls_Chickens
Do race horses slow down if they see Police horses at the side of the track?  #GMB #EquineFlu
2:31 AM · Feb 8, 2019
 
Facebook
Indian Hills Community Sign
May 4, 2023 at 12:12 PM ·
DO RACE HORSES
SLOW DOWN
WHEN THEY SEE
POLICE HORSES?