I'm pretty sure it's a K9 as well. It also may have been filmed from an earlier period when they were allowed.
Detectives often times get a little leeway and some just downright don't follow the rules too.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."