[hangonhn]

Oh wow! I've never even considered that. I wonder if the dogs pick up on subtle behavior cues from their handlers, which the handler may not even be aware of. The dog ends up giving a seemingly legit outlet for some unconscious bias.

[recursivecaveat]

Reminds me of Clever Hans https://en.m.wikipedia.org/wiki/Clever_Hans

[kn0where]

An officer can give the dog a subtle cue to alert. Happens all the time.