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Typical cadaver dogs work by detecting VOCS (volitile organic copounds) that are emitted by actively decomposing human remains. They aren't going to be of use near the cars or work parking lot dumpsters unless a body was out there long enough for decomposition to set in. If someone died there, and was immediately removed from the area, most cadaver dogs are not doing to get a "hit". However, some cadaver dogs, a specialized subset called blood-detection dogs, can be trained specifically to locate human blood at crime scenes. Interesting article here from Science direct on those dogs. https://www.sciencedirect.com/science/article/abs/pii/S2468170918300195I agree with above thinking, this could very much be an EX or something like that, the friends who she shared about the phone calls should also know if she's dating or has dated someone IMO. Do we know if they took the Cadaver dogs around the parking lot (employee cars) dumpsters etc?
Scent dogs, however would be very useful (it's a completely different skill set for the dog). I hope they did that.